QA1's Handling Kit is the premier suspension upgrade for '75-81 Camaro/Firebird ( body) owners seeking exceptional handling. This kit replaces the front and rear suspension with QA1 MOD series 4-way adjustable coilovers and a narrowed QA1 9" rear housing, and four-link optimized for wider wheels and tires. Experience superior handling with lightweight control arms that improve geometry and reduce flex. The adjustable four-link design eliminates wheel hop and improves traction and handling. Front and rear sway bars and subframe connectors minimize roll in tight corners. Factory springs limit stance, but QA1's MOD series coilovers and 4-link offer 2 inches of front adjustability and 1.25 inches in the rear for ideal ride height. The kit allows for massive 12-inch-wide wheels with 335 tires. PERFORMANCE 9" Strength: Fabricated center section with 3 OD, wall axle tubes support 800HP and 31 spline axles are rated to 650HP. Features: Standard options include powder coat, drain and fill plugs, jack pad, and all necessary hardware. Specs: Narrowed wheel mounting width: 56-1/8 (narrowed 2-1/2 per side for mini tubs) Big Ford New Style Torino Axle Flanges with 2.5 axle offset Bolt pattern: 5x4-3/4 for easy wheel compatibility Wheel studs: x 3 for alloy wheels Requires third member for Ford 9 housings with 31 spline axles The QA1 Handling Kit features a straightforward installation. The rear crossmember needs minimal MIG welding, and all other components are direct bolt-in. Components manufactured in the USA Narrowed housing is recommended for custom offset wheels and mini tubs Verify wheel and tire fitment on the vehicle Mini tubs required for maximum tire width Some welding may be necessary Exhaust modifications may be needed