Owning a custom truck shop in Houston means pushing the limits on every build. Mark and Josh at Mod Mafia flip the script on a ‘97 Hummer by swapping in a bigger, badder military grade Humvee chassis. After an engine failure, the team finds and installs a rare P400 diesel engine, which is a 6.5L V8 long block. Meanwhile the father son team at Wide Open Garage hand-build the 90’s Chevy Truck into a race truck with a turbo 400 LS engine. The team goes all in with custom race suspension, axles, drive shaft, full paint, wheels and tires.