Diesel Brothers

Heavy D's plan falls apart when he plans 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 maybe the most dangerous minibike the world has ever seen.

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

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

Heavy D has big plans to convert a Vietnam-era bridge boat into the world's only diesel-powered surf boat. Later, the guys head to California to track down a rare Excursion to use in their next giveaway.

Heavy D is in deep with his insane diesel-powered boat conversion and is on the verge of seeing his dreams sink. Meanwhile, the race is on to get their MegaTrucks in working order before the epic showdown in the Pit against the Dirty 7.