Social media star Liver King not only wants Mod Mafia to beef up his prized 2001 H1 Hummer's performance, he wants to customize it for his primal lifestyle. The team at Wide Open Garage is asked to build a custom off-road truck completely from scratch.

1 Way Diesel Performance is thrown a mega-curveball with a classic '48 Dodge Power Wagon. The Wells family more than meets the build challenge with a custom four-door extended cab, turbo-diesel dually. In a race pitting garage vs. garage, a 2,700hp diesel truck hits the line against a turbocharged first-generation Camaro.