This channel wouldn't exist without Oscar, such a legend

Oscar's geometry skills always blow my mind. He's clearly brilliant.

Gotta love Oscar, man... the dude's a machine.

License plate NEEDS to be "NOT LNR"

Your behind schedule?!?! YOU DON'T SAY!! I'm shocked. 😂😅😅

I love that this one is a combination of all the knowledge gained from building the past ones. I can tell this things is going to be absolutely astonishing.

Glad Kyle is back ... Oscar is such a BEAST on fabrication... Great build watch

When are u guys EVEN on schedule!?!? No matter how time plays for u guys, u ALWAYS make it happen!! Oscar is always a beast no matter whos there to help or not! You guys got this 🔥🔥🔥

It's nice seeing Kyle back!

I’ll never forget Oscar’s work on the gas cap area on the first fastback build…I don’t know why that sticks out to me specifically. But it was so clean and perfect. I hope somehow we get to see that again one day. It was epic.

That is looking more thought out than the last build and seems easier to put together from previous experiences. Too bad you couldn't do more builds like the 2019 Mustang to convert for production sales. I think you could make a lot of money.

As an architect, I can tell you the roll bar bracing is just fine as built.

Side exit exhaust under the door is the way to go!

I don't know anybody that it's as clever and hard working as Oscar. What a champion

Hey Chris, structural engineer here. That cross from the main bar is fine. It'll do what is required of it in an accident.

One day I would like to hear the story about how you and Oscar met and started doing car stuff together. I know it sounds corny and im being extremely nosey but I think that stuff is kinda cool to hear. I think you mentioned in an old boat video somewhere that he worked for a company that made metal railings hence why his welding and pipe bending and just general metal fabrication is pretty good. Its like sometimes you meet people at some of the most unsuspecting places and these people just become your friends for life because you all share a deep passion for something.

I'd love to see a 6th generation (2019-ish) Chevrolet Camaro SS or ZL1 and retrofit a 1969 Chevrolet Camaro body for daily drive ability. That'd be sweet!

Oscar, Chris and Kyle are very good at what they do. Their builds are far more precise than what other guys build for desert and canyon running.

I’ve been watching for yearsssss now and you guys have made some incredible cars. But do we really need ANOTHER mustang. Let’s do something new!!

You guys are really getting good at this one

Like everyone, the first build broke my heart. After several swaps Oscar is unbelievable This is My Favorite car, I had a 68 gt390 4spd. Chevy Guy whos Loves stangs no matter what my daily is a mustang, Thanks Guys Love the Build You Rock.

I can hardly wait to see the end result. Great Job fellows.

Oscar seems like the kind of person that would get more done when you're not around.

Just hope Oscar is paid what he deserves, that man gives his all 👏👏👏🔥🔥🔥🔥... make him a patreon,I would gladly pay. Great job all of you.

Fantastic progress on the Mustang, best ever retro body swap BB has built. Very interested in the XXL 3D printer project. a real game changer in reproducing body panels and custom molds.

The quality of this build looks much improved from last years. Loving it

Thank you so much for showing such detailed steps of the building process. I was planning to start my own, and this help tremendously with the way forward.

"We're behind schedule" is only click bait for new viewers. But that's a good thing because when anyone watches one of your videos, they'll inevitably start watching every other video and buying all the merch 😂 love everything you guys do!!!!!

It would be so cool to see a road trip of this and the mid engine mustang !!

If you cut the spare tyre hole out and weld in a flat plate you’ll have a load of extra room underneath

From an impact standpoint, an impact on the top of the roof where the "X" meets the hoop (kinda above the B pillar), would cause that tube to bend at the point its welded at the frame. It seems like a long piece without ancillary support for the case of impacts. But for frame rigidity, it's sound. If you'd want to add additional support, I'd suggest small kicker tubes below the X straight down to the frame.

Missed this series so much . B for build is my favorite

You know making BifB videos won’t last forever. You should do one or both of these things for future success: 1) Production shop that builds these mustangs for buyers. 2) Create a kit with all of the body parts and step-by-step instructions with accompanying videos. Every part is high quality, has all cut outs needed and minimal welding. This lets builders build their own with a great kit. Then you can do the same with other cars… Camaros, Challengers, etc.

Its interesting how you guys can visualize how those parts need to be trimmed to fit together....on the inside ofnthe parts. Blows my mind.

Well done for your work Chris and Oscar is really a Precious asset for you and for your channel

i would do a full cage for safety and the lost rigidity

Impressive progress and Oscar is a LEGEND!👍👍

This was awesome, Oscar is a machine & happy your feeling better. Cant wait to see this done,

It wouldn't be a SEMA build if you were running on time! Very much enjoying the build so far, can't wait to see it's progress and the last minute panic to get it all finished before the show lol.

Huge respect for Oscar Way to go man😍😍😍😊

Great video and build.. The fuel flap is a ‘Monza’ style flap and dates back to post WW2 Grand Prix cars and dates well before Shelby used on the Cobras. The other flap style was the Aston and again dates back to the early Aston Martins and Jag racing cars.

Can't wait to see the 3D print body parts

Chris you really need to treat Oscar to a really great Christmas present this year! He has brought your channel so much farther than you know!

Oscar is a fabrication Wizard. You guys work together very well.

Removing wipers is such a California move. It's like when I removed the AC from my car when I lived there. The only time I missed it was when at the dragstrip in boiling temps. That car became a "one month" car when moving to FL. Luckily I kept all the parts and will put it back when I rebuild it.

Oscar did a great job with the work and videos!

You guys are doing an amazing job!!!!! You are going to have two of the sickest mustangs out there

Car is looking great!!! Y'all have to get a photo with Ocars Mustang, the white wide body one and with this beauty!! Shout out to Ocar for knocking it out the park!

need them "in Oscar we trust" shirts, dudes a machine, get to have someone you trust who can be cut loose on a project.

Much props!! To Oscar!! He’s a bad ASS!!!

Whoa team reunion! All hands on deck!

that rollcage work is so mint, oscar needs an award

My car build is always behind schedule, and I don't have a due date. I know it would be boring to film everything and there is a ton of stuff you do that isn't captured. What you show in 25 min is a lot of work. Hell editing is probably a lot of work. So thanks! Great content.

Shelby Blue with white racing stripes and get the wheels and all the old chrome parts. (trim. Fuel cap etc.) Cerakoted bronzy gold

It's coming along nicely. I think you should cut out the spare tire well. Just get rid of it and make the floor flat. I think it would make the back of the car just look cleaner

Next time you seam seal you should etch prime before hand for extra rust protection and to give the sealer a better surface to bond to

Great video! That was an amazing amount of work and Oscar should get free beer for a year! Can't wait to see it when you bring it here for SEMA.

New drinking game take a shot every time Chris says “structural rigidity” 🍻 😂

Really excited for this final look

Its so enjoyment watch Oscar work and do his magic 😊

Oscar has got Chris's back. A good man and a really great team. Please look after yourself Chris. Your ummune system is probably wrecked after the cancer. ❤

Man seing you build this car 3 times now gives me hope that I might just be able to own my dream car some day after all.

Loving all the addtions and mods on this build vs the Last one that we didnt get to see to finish

Very cool you got the Band back together.

Cool build. Suggest you engrave something into the fuel fill cap/ gas fill cap

I hope you guys are going to clean the engine bay along with undercarriage and ect. So far, looking great.

Fyi. Your cage pipes need to go straight back. After your main hoop. You can add a x behind the seat or add a halo hoop or double seat belt bars. The main hoop should be tied in to your frame or your unibody you should weld your brace plate to main structural. If you don’t want to move your pips over that far. You can always tie them into the shoxs tower. All of this has to do will side impact at high speeds and how the system folds and collapses under pressure so be safe and move the pipes since we all know your going to race it 😊

Wow guys your getting super proficient at these mustang body swap builds , this is #4 I think you probably have the record for one channel with the most mustang swaps 👍🏻👍🏻😎

3:30 I was just telling someone that the windshield washer reservoir should be the one gallon bottle that the windshield washer solution comes in and you just swap the bottles and have the pump in the lid.

You guys are awesome, really enjoying the build. I just wish I had the money to hire you guys to build one of these for me!

Good job Oscar!! My favourite shirt. 👏👏

"..in case you're following along at home.." (presumably with your own Mustang body swap) 😄BIFB is probably the only car shop on the planet crazy enough to do one of these!

WOW...The car is REALLY coming together, SO much work, but its looking super good! #BuiltByBo

I’m surprised y’all haven’t built your own plasma table yet. Halfass Kustom has a recent DIY.

Amazing build!!

I feel real sorry for all the other build shops that dont have an Oscar - oh man! What a machine! Unreal quality work! Glad u feeling better Chris! Hi from Down Under!

That’s some quality handy work there 👍

Currently building a 70s deville into a street spec cruiser. Honestly this channel has inspired me to take on this challange the car is giant but the 7.7 makes it feel like im driveing a 99 civic

Im glad oscars skills arent lost in some random 5-9 body repair shop. The dude is great

Love the videos! Please build some side exhaust ! ☺

On that roll cage Chris. Remember to consider the bar for your seat belts. That's the only thing I see. Maybe there are others but that is what I see,

They sell a fill through gas cap. It might help you not have an issue with gas venting and CELs

Oscar is the MAN … without him B is for Build has no content worth watching

Nice to see Kyle back on the channel 🤙 it wouldn’t be a B is for build … build if it’s not don’t to the wire I wouldn’t expect this one to be any different 😅

Always love to watch your videos...from the philipines...

Always have my mind blown about how you do all the work on these builds all at the last minute! The planning and work to get this organise is just amazing. Is this by design to build the suspense or just the way it pans out?😊

Are these doors and fenders better quality than past projects or are you guys more familiar with where/how they should fit and where to begin?

on the roll bar you definitely need the rear "leg" supports. the crossbar isn't a substitute for it

Time to get some vitamins. This man is down with the sickness more than I've seen the past decade.

Glad to see Kyle back

This car is way better the first one. Can't wait to see the finish.

I would love working with you guys not only do you do interesting builds but you know some of my favorite You Tube creators

Dude, this thing is looking great 👍🏼

Remember if you travel to East Coast you must, must follow the dude lines of COVID 19. Must Sanitize and Wear Mask outside It’s a must. Always wear mask while traveling by Air at Airports. My son in law is a Doctor and I do travel to east coast quite a bit. New York, New Jersey especially is bad new news. Protect yourself. Good luck.

For the cage construction it is not as strong as a conventional X brace and rear bars. if you imagine an impact on the top corner of the cage trying to push that corner forward and inward you will see it doesn't put any bars into tension which is where cage strength comes from. Aside from that actually welding the cage to where it contacts the body will add to its strength.

Big thing with frame design is triangles. Triangles make everything stronger. X is overkill but if you like the look.

Also my favorite car. Great build!😎👍

Oscar did a great job!

Lovely work

Oscar way go and focused on the project to meet the deadline,,,Chris I hope your paying him good,he deserves it