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.

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.

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 c.

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.

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.

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.

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.

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 must build a custom off-road truck completely from scratch.

Wide Open Garage's mega-truck build gets even bigger as they take an old-school '82 C10 square body and 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 horsepow.

1 Way Diesel Performance is thrown a mega-curveball with a classic '48 Dodge Power Wagon. In a race pitting garage vs. garage, a 2,700hp diesel truck hits the line against a turbocharged first-generation Camaro.

The Wells family contends with 50 years of rust on a 1973 Peterbilt 352 COE; Josh, Mark and the Mod Mafia team give a 2018 Ford VelociRaptor a custom, high-performance overhaul.

The Wells family pushes to new heights customizing a 1973 Peterbilt 352 COE; over at Wide Open Garage, the father/son team Dave and Daniel have their hands full building out a lifted F-450.

If you're off-roading or overlanding in Texas, building the right truck for the job is a necessity.

Chase, Tommy and the entire team at 1 Way Diesel Performance go the extra mile to transform a stock 2022 F-450 into a lifted, six-door mega cab.

Mark and Josh at Mod Mafia flip the script on a ‘97 Hummer by swapping in a bigger, badder military grade Humvee chassis.

The Wells family at 1 Way Diesel Performance goes all in on an old friend's beloved 1993 Chevy Suburban in need of a top-to-bottom overhaul.

Daniel Donnan's creativity is tested when a new customer wants to turn his four-door 2006 GMC Sierra truck into a cool off-road truck.

Two classic American muscle cars roll into two very different Texas shops.

While Mod Mafia is better known for custom Hummers, Josh and crew bring a '69 Plymouth Road Runner to life with a rebuilt 426 short-block Hemi.

1 Way Diesel Performance turns the shell of a 1991 Fox-body Mustang into up to 3,000-hp diesel race car.