For '75-81 Camaro/Firebird body with a 108" wheel base. For best fit, assemble the main cage and rear frame rails inside the body. Use with our Eliminator II 4-link and tubular A-arm front suspension. Ground clearance is 3-1/2" at the 4-link crossmember and 3-1/2" at the firewall. The 20" outside 4-link bracket width will accommodate up to 34.5x17" rear tires. The funny car cage surrounds the driver and locates the seat as far to the rear as possible. The roll cage assembly consists of 1-5/8x.134" wall and 1-1/4x.120" wall ERW tubing. Double frame rails; X-brace in the floor; collector risers; cage side diagonal floor supports; butt bar and extra bracing is standard on this chassis design. The kit includes a pair of front frame rails; a pair of rear frame rails; funny car cage; collector risers; upper and lower A-arm mounts; tubular Pro box rack-and-pinion crossmember and mounts; rear coil-over upper shock mount tabs and hardware; one engine mount loop; CAD drawing; and instructions. Due to sanctioning body rule changes, the purchaser takes all responsibility for assembling the chassis to meet the specific class you are running. We do not guarantee these parts to meet any specific class requirements.