Car Fix

Jared and Lou give a '71 Plymouth GTX more power by installing a supplemental planetary gearbox. They also tackle a worn-out AC to keep the driver cool.

Jared and Lou quiet the ride of a 1981 DeLorean by adding sound-deadening material, and install a backup camera so the owner can see behind him.

How can you get a car that's been sitting for a while back on the road? Jared and Lou show what to check for on a 1988 BMW M3.

Jared and Lou upgrade the suspension in a 2010 Audi R8 from the factory adaptive system to coil-over shocks. They also fabricate an air intake for better performance.

Jared and Lou explain the difference between a street-legal track car and just a regular car using a 2017 Ford Mustang Shelby GT350R and two high-performance engines. The guys also upgrade the Shelby's exhaust and suspension.

Jared and Lou explain how to diagnose the issues causing a "check engine" light to go on, and they bring back the new car smell in a 2008 Porsche 911. A 1971 Plymouth GTX returns to the shop to upgrade its exhaust.

An owner wants to get his one-of-a-kind, mid-engine 1968 Camaro back on the road. This showstopper is in the shop to get some interior upgrades and new brakes, and to address some wiring issues.

The owner of a 1985 Chevy El Camino needs to install a crate engine and new transmission. Before he can do that, Jared and Lou will address the body mounts and suspension to prepare the car to receive its new components.

Two iconic '80s sports cars are in the garage. Lou and Jared will change out the tires on a 1983 Lamborghini Countach 5000S, and do a bit more work to get a 1989 Lotus Esprit racing down the road.

The guys work on the front and rear suspension of a 1967 Ford Fairlane that is in the middle of a restoration. At one point, it was upgraded to air shocks, but now the owner wants to go back to the factory setup.

The guys have a '55 Chevy Bel Air in the garage today. The owner added an LSA engine, so Lou can install the front accessory drive. Jared shaves the fuel door and relocates the filler neck to the tail light with a conversion kit.

A stock engine on a 2012 Cadillac CTS-V already has over 500 HP, but Jared and Lou know how to get even more. Today, the guys are going to install a new air intake and exhaust to boost it to another level.

The guys take actor John Cena's 1999 Lamborghini Diablo repli-car and get the V-12 BMW engine running again.

The owner of this unique 1999 Mazda Miata has replaced the engine, drivetrain and transmission. Jared and Lou will work on some fabrication and wiring to finish the build.

The owner of a 2001 Dodge Dakota wants to change out the stock engine for a 4BT Cummins to get more power. Jared and Lou tackle the engine swap and get this powerhouse up and running.

Jared fixes a clutch problem on his '90s Blazer so he can trade it in for a '20 Corvette Zora C8. But once the repairs are done, he has to decide if he really wants to part with his old ride and take the plunge with the new car.