In The Garage

Heavy D decides to test the physics abilities of the shop and build a somersaulting truck to use for viral videos; The Muscle takes over a flip from Heavy D and turns a Dodge Ram into a modern pop-up camper.

The Diesel Brothers come up against the clock for their SEMA build: a replica Ford Bronco made from an F350 and an Excursion; Heavy D brings in physics help to make his dream of a somersaulting truck come true.

The Dieselsellerz SEMA build hits a snag, and the guys scramble to find a replacement; they decide to rebuild and give away their most iconic build, "the Megaram.".

The Diesel Brothers attempt to dieselfy a Prius, try their hand at bull riding, and almost lose Chet in an unfortunate dolly race.

Heavy D, Diesel Dave and the DieselSellerz crew reinvent a bullpen car for the MLB Network while working on a Chevy Duramax for baseball legend Miguel Cabrera.

Heavy D's plan falls apart as he strives to turn a Cummins-swapped K5 Blazer into a one-of-a-kind off-road showpiece with a matching trailer for a big client; Sam builds a dangerous mini bike.

The Diesel Brothers complete their transformation on an old K5 Blazer and square body truck bed into the ultimate diesel-powered party on wheels; Diesel Dave convinces Heavy D to give his El Camino what it needs to get back on the road.

Heavy D puts the pedal to the metal on his next SEMA build, a 6x6 with a custom full-track assembly that can handle any terrain in style; Diesel Dave puts finishing touches on his dream El Camino before revealing it at Monster Jam.

Heavy D sends Diesel Dave and The Muscle on a secret late-night mission to the spooky overflow lot; however, completing their task becomes difficult when they remember all the builds they've done throughout the years.