ABC Performance has developed a line of Michigan-made products to help you build your muscle car to today’s standards. From suspension components to smoothie firewall panels, we make products that work for muscle car enthusiasts because we are muscle car enthusiasts. We know our products fit and work like they’re supposed to because we use them too!


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Mini Tub Frame Kit

When building your ’64-’72 Chevelle or other GM A-body for extreme performance and extremely good looks, the ABC Performance Mini Tub Frame Kit allows you to stuff maximum-sized meats under the rear of the car. And there’s no need to narrow your rear axle or relocate the suspension control arms!

This latest product from ABC Performance is a do-it-yourself kit that lets you move the rear framerails inboard two inches. The kit includes an outer plate, C-channel inner section and reinforcement gussets. The finished frame sections are stronger than the originals! A new upper shock-mount crossmember further strengthens the chassis.

With the ABC Performance Mini Tub Frame Kit, you can fit 335/30ZR18 tires under the rear of a ’66-’67 A-body. That’s 13.5-inches of rubber gripping the ground! While the ’64-’65 A-bodies are a bit more restrictive in the tire opening, the ABC Performance Mini Tub kit lets you fit 315/30ZR18s under these cars.

‘64-‘67 A-body

Price: $825

Plus Shipping and Handling


Mini Tub Kit

This is the kit for ‘64-‘67 GM A-bodies. The new 3/16-inch outer plate, 1/8-inch C-channel inner section and reinforcement gussets create frame sections that are stronger than the original. A new upper shock-mount crossmember further strengthens the chassis. The new frame sections and gussets are CNC laser cut, and the crossmember is formed in a CNC tubing bender.

Viking Performance Coil-Over Shocks

Our Mini Tub Frame Kit is designed for coil-overs. We offer both single-adjustable and double-adjustable shocks and can help you choose the spring rate for the weight of your vehicle and the type of performance you want.

Additional Components

While our Mini Tub Frame Kit comes with everything you’ll need to modify the frame, there are a few additional components that you may want to consider, depending on how you are building your A-body and what other modifications you’ve already made.

Transmission X-Mbr for ‘64-‘67 A-body

Price: $250

Plus Shipping and Handling


Frame Boxing Kit

If you’re building a car that needs larger tires, you should really consider boxing the frame. Installing both our Frame Boxing kit and Mini Tub kit at the same time saves effort and makes your chassis ready for serious performance, whether you’re into turning corners, drag racing or both! Click here to read more about our Frame Boxing Kits.

Transmission X-Mbr

When you install our Frame Boxing Kit, you’ll need our tubular Transmission X-Mbr. This installs with weld-on tabs to the inside of the boxed framerail and accepts the transmission mount used on just about all GM transmissions. The Transmission X-Mbr is available with or without an integrated driveshaft loop. Chromoly is available: call for pricing.

Transmission X-Mbr for ‘64-‘67 A-body with driveshaft loop

Price: $365

Plus Shipping and Handling


Double-adjustable coil-over shocks

Price: $550

Plus Shipping and Handling


We will call you to confirm desired ride height and spring rate after you order.

Wide Wheel Tubs

Whether you’re using an ABC Performance Mini Tub Frame Kit or an aftermarket chassis, the ABC Performance Wide Wheel Tubs make it easier for you to fit wider tires under the back of your ’64-’67 GM A-body!

The ABC Performance Wide Wheel Tubs are designed to mate to your original outer wheel tubs or they can be installed with reproduction outers.

These are brand-new wheel tubs, made in Michigan! They are stamped from 20-gauge sheetmetal for a factory look, and they are 2 inches wider than factory.

ABC Performance Wide Wheel Tubs let you fit 335/30ZR18 tires under the rear of a ’66-’67 A-body and  315/30ZR18s under a ’64-’65. They will also fit station wagons with modifications.

Wide Wheel Tubs for ‘64-‘67 A-body

Price: $495 for a pair of inner wheel tubs

Plus Shipping and Handling


‘68-‘72 A-body

Price: $950

Plus Shipping and Handling


Mini Tub Kit

This is the kit for ‘68-‘72 GM A-bodies. The new 3/16-inch outer plate, 1/8-inch C-channel inner section and reinforcement gussets create frame sections that are stronger than the original. A new upper shock-mount crossmember further strengthens the chassis. The new frame sections and gussets are CNC laser cut, and the crossmember is formed in a CNC tubing bender.