This 1991 GMC TopKick C7500 Mega Hauler is a custom, one-of-a-kind build with over 2,000 man-hours invested in modifications. It features a turbocharged diesel 3116 inline 6 engine paired with a 5-speed manual transmission and a 4:55 rear end. Notable custom features include a Denali interior, rebuilt gauge cluster, new turbo, complete stereo system, rear backup camera, touch screen head unit, custom crew cab configuration, shaved lights, relocated door handles, removable side step entry, stow-away compartments, a 50-gallon fuel tank, heavy-duty 5-ton rear axle, custom bumpers, raised suspension, and unique dually super single wheels.