The boys are back to kick off Season 4 with their most epic engine swap to date! This time Finnegan and Freiburger drag an old Rogers Bonneville jet boat to a local Southern California lake behind the Muscle Truck, a lowered 1974 Chevrolet C10 pickup that's powered by a Chevrolet Performance LS6 crate engine. Once at the lake, they proceed to remove the engine from the truck and install it into the boat, hoping to do a little drag racing during the Tom Papp Memorial boating event. As usual things don't go as planned but the guys still manage to have fun involving an outhouse, shower curtains, scummy water and a trailer hitch. Oh yeah, did we mention that after going boating Finnegan and Freiburger still had to take the engine back out of the boat and re-install it into the truck to get home? ep036