When Willie and Kevin find a 1953 M37 sitting in a friend's garage next to a Cummins 4BT and all the parts needed for an engine swap, they volunteer to provide the labor.

With a powerful Dodge Challenger in the shop for maintenance and performance upgrades, Kevin and Willie can't resist adding on a new exhaust for the owner as well.

Federated Auto Parts send Willie B. and Kevin a Jeep Wrangler to outfit with a new Dana 44 and a few other upgrades for a lucky winner.

Kevin and Willie build a new bed for an ongoing 1973 truck project before solving some issues with the hub assembly on a hefty F-350.

When a 1969 Camaro with bad body roll is delivered to the shop, Kevin and Willie tackle the suspension to help it perform better on the track.

Willie B. and Kevin go under the hood of the new Mustang EcoBoost 4-cylinder to add some performance upgrades; progress on an old pickup project continues with rust repair and new body panels.

Kevin and Willie diagnose a noise issue on a high-mileage F-150; a battered old pickup shows up in the garage in need of serious repairs.

Willie B and Kevin turn a mellow 2002 Mustang GT into a mean, lean, power machine with a few performance upgrades.

Kevin and Willie beef up the suspension on a 2014 Jeep JK to transform it from a daily driver into a weekend off-roading vehicle.

Willie B and Kevin finish up a 1970 Chevelle project with some much-needed attention to the interior.

Kevin and Willie B take a 1970 Chevelle from an automatic to a manual transmission, outfitting the new engine along the way.