This is the new Mad Goat Customs shop truck, a 1956 White Motor Company Super Power 3000 cab on a modern GMC W4500 (Isuzu NPR) chassis. It’s powered by a modified 8.1 liter Vortec (496ci) Gen 7 Big Block Chevy making 419 hp and 503 lb/ft torque, backed by an Allison LCT1000 5 speed automatic. The cab remains mostly unaltered, the fenders and running boards have been narrowed 5.25 inches on each side and the front bumper narrowed 14.5 inches. The cab can be tilted hydraulically to access the engine. The front suspension is air over leaf and the rear is custom four link with air springs. Ride height is controlled by Accuair e-level controller and an engine driven compressor.