A new client asks for the biggest build yet -- a monster school bus capable of driving over sand and water. And The Muscle brings in his own client build for a gym buddy- a Raptor-style F250.
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 metal 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.
The guys pull out all the stops on a build for their lawyer Cole and convert a rare Land Rover Defender from right-hand drive to left-hand drive. Heavy D tries to get more money to the shop by parting out a military airplane de-icer.
The Diesel Brothers give a truck overhaul to a local dad who was harassed at a campsite when his F350 broke down. And the guys put together the shop's first-ever diesel Motorcycle, with a Magneto!
When the guys are challenged to a Tuff Truck race by their former mechanics, Chet and Tyson of Goon Garage, Sparks Motors rebuilds a wasp-infested old Jeep and the Goons rebuild a water-logged Blazer.