I think the rig looks a little more scale with the RC4WD BFGoodrich T/A KR3 1.0's. It lost a little crawling performance, but the Power Wagon is really more of a trail truck than a crawler.
upgrades:
V1 LCG Set for SCX24 by GrizzlyworksRC
EMAX EMX-SV-0275 ES08MA II 12g Mini Metal Gear Analog Servo
MEUS RACING SCX24 Axles Isokinetic 3-Section CVD 52° Max. Steering Angle +5mm Widened
INJORA Steel Drive Shaft
INJORA High Clearance Front 4 Links Set long wheelbase
DJCRAWLER 1.0 Deep Dish Bead Lock Metal Wheels
RC4WD BFGoodrich T/A KR3 1.0" Micro Crawler Tires
Spektrum Firma 8A Sensored Brushless ESC/Motor Combo
Flysky FS-GT5 6 Channels RC Transmitter with FS-BS6 Gyro Receiver