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.

Wide Open Garage's mega-truck build gets even bigger as they take an old-school '82 C10 square body and their hand-built chassis to create a one-of-one show truck/monster truck. 1 Way Diesel Performance lives up to their name by giving an '88 Silverado more than 1,200 horsepower.

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.

The 1991 Land Rover Defender is known for ruggedness and simplicity. Mod Mafia does a reboot of a tired, old Defender with modern performance, power and custom luxury. Wide Open Garage takes an old-school Bronco monster truck into overdrive.

Putting a twin-turbo Cummins into a 2004 Lamborghini Gallardo is a monster build unlike any other for 1 Way Diesel Performance. YouTube's "Unspeakable" star Nathan Graham asks Mod Mafia to help him out of a jam with his all-terrain, amphibious SHERP.

Looking into what happens if a Cummins diesel engine is put into a 2004 Lamborghini Gallardo; a customer wants Wide Open Garage to turn an old, rusted Chevy truck into a lifted, all-terrain truck on huge 74-inch tires.

Mod Mafia transforms a fire-damaged M1038 Humvee ambulance into an extreme camping overlander; the Wide Open Garage team builds a bulletproof race car for the appropriately billed Death Car Race, in which drivers are blindfolded.

1 Way Diesel Performance gets their fair share of extraordinary build requests. So no one is surprised when a little request about a '47 Ford truck becomes their next ground up build. Mod Mafia jumps into uncharted territory with a Viper ACRX race car.

The father-son team at Wide Open Garage have their hands full converting a rusted shell of a Suzuki Samurai into a rock-crawling mega-truck; a customer arrives at ModMafia with a big problem: their Jeep Gladiator isn't safe to drive.

Building a 1979 Little Red Express from a Cummins diesel on out, including compound turbos; down the block from Ekstensive, the father-son team at Wide Open Garage builds a Samurai lake crosser from the ground up.