In The Garage

Diesel Dave picks his first giveaway truck and dreams big, attempting to build the 2020 version of the Kodiak; Todd LeDuc challenges the guys to a desert race and flips the script by picking The Muscle to be on his team.

Diesel Dave continues working on his epic modern-day Kodiak while making sure he doesn't break the bank; Sam the Mad Scientist unveils The Kraken; a diesel-powered monowheel vehicle that is unlike anything the guys have ever seen.

Mad Scientist Sam's wild creation, the Kraken, comes to life, but Heavy D continues to be skeptical of the build's potential viral success; a high-profile client wants to customize a Ram 3500, which puts Diesel Dave and The Muscle to the test.

Heavy D surprises the mechanics with his build: a tank; he has big plans for the beast, but must first find a new engine and get it moving again; Heavy D, Diesel Dave and the Muscle personally trick out their latest giveaway truck.

The Diesel Brothers continue work on their tank build, but engine and transmission troubles put the project in jeopardy; the shop splits into teams for a build-off between an AMC Eagle and a Subaru Brat for the Tour de Utah off-road race.