2008 double cab 4x4 with the 5.7. Other than the tow package (deeper gearing and special auxiliary trans oil cooler) it didn't have any other options.

You can do that, but you'll need to leave the hard line and fitting a little loose so they'll rotate into optimal position when you hold the SC up and bolt it into position, then you can tighten the fitting down. It's just my personal preference to have the cylinder mounted so I can feel the inverted flare press up against the sealing cone and then bring the fitting down on the back of the flare.

shift+control+arrow you need

Uggh... I've also got an '81 front end and they had pressed on rotors (I think it was that way for 79-83 on U.S. 4x4 trucks?) The lug studs are pressed through the rotor and hub holding the rotor to the hub. You have to press the lugs out to remove the rotor from the hub. Then you have to press them back together. If you can, find someone with a H-frame press. It will make your life a lot easier. In later versions the rotors were bolted on to the hub which was a lot easier to deal with.

So this is where it gets goofy, both fluid ounces and ounces represent a unit of measurement, but they are different. Fluid ounces, as the name might imply, are specifically meant to measure volume (often of liquid ingredients like water), while ounces measure weight, usually of solid ingredients. So a gallon of water has 128 fluid ounces in it, but a gallon of propane (depending on temperature) weighs 4.11~ish pounds which if we're converting to ounces weight (not fluid ounces) is about 66 ounces of weight. (4.11lbs x 16oz = 65.76oz weight) They sell the green bottles with a net weight of 16.4oz of propane in them, not 16.4 fluid ounces. It gets confusing because propane as it's sold to us in the little green bottles is a "fluid", but they're selling it as net weight and not fluid ounces.