Roadkill

David and Mike trek to Colorado for a 1971 Ford Crew Cab 4x4 tow truck and to meet with cool fans. Then, they head to Arizona to pick up an old friend -- the 1950 GMC truck they rescued from a junkyard.

David and Mike have a mullet-car showdown with a SN95 Mustang V-6 and a third-generation Camaro with a 305.

David and Mike hold a shootout of the cars they've built that are still running after 50 episodes, including the Nascarlo, Stubby Bob and the Mazdarati.

Roadkill brings back a Mazda pickup powered by a 455 Oldsmobile in the bed!

David and Mike take on a 1950 Ford F6 dump truck, shorten the wheelbase, add a supercharged big-block Chevy with a Gearstar 4L80E transmission and a V-drive from a boat.

David and Mike rescue a 1956 Buick Century from a junkyard, where they literally hack it out of a thorn bush it's been sitting in for 25 years. Then they attempt to mount the body on a 1973 Corvette chassis.

David and Mike score a 1970 Dodge Challenger from a fan on a llama farm in Oregon. It was set up as a dirt-track race car in the 1990s, so the guys set out to revitalize it to let the thrashing begin.

David and Mike convert a 1991 Cadillac Brougham with a Cummins turbo diesel. Special guests Tony Angelo and Lucky Costa of Hot Rod Garage are here to help with this black-smoking, tire-churning project.

David and Mike take a 1970 Dodge Challenger to a swap meet in Ohio for parts before heading to a drag race in Pontiac, MI. Along the way, there's a detour to check out Mike's dream machine -- a 1968 Pontiac Firebird 400.

David and Mike test out a trailer with an engine that powers a centrifugal supercharger to send a boost to a 1978 Chevy Monza Spyder. They head to a secret high-speed, high-tire-smoke test facility to find out if it really works.

David and Mike get their dream cars -- a 1968 Datsun 520 mini truck and a 1971 Plymouth Road Runner. Fred Williams from Dirt Every Day makes a special appearance.

David and Mike plan to each buy a car for $1,500 and enter the Optima Ultimate Street Car Invitational in Las Vegas. They get a 1974 Honda Civic and a 1985 Mazda RX-7, resulting in burnouts, engine explosions and desert thrashing.

David and Mike get together with Australia's Mighty Car Mods, Marty and Moog. Each team agrees to build a car, starting with a 1969 Chevy Impala and a Subaru WRX. Then they meet up for some killer burnouts and mad skids.

David and Mike head out on the annual Hot Rod Power Tour, starting with some burnouts in a 1973 Chevy van.