QA1 Rear Suspension Kit - Single Adjustable - 200 lb./in Spring Rate - Steel - Black Powder Coat - GM 12 Bolt - GM Full-Size Truck 1973-87 ididit These lifters are manufactured using

These lifters are manufactured using the tightest tolerances in the industry to ensure peak performance in your application

The best standard port location head available for competition big-block Chryslers Intake ports are raised

Self-tuning ECU means you dont have to be a computer/tuning wiz to have EFI

Only one valve spring can go there and come back alive

Air Pressure Holds Up Valves While You Work

QA1 Rear Suspension Kit - Single Adjustable - 200 lb./in Spring Rate - Steel - Black Powder Coat - GM 12 Bolt - GM Full-Size Truck 1973-87 ididit These lifters are manufactured usingWith this all new, engineered from scratch rear system, 1973 1987 C10 owners can add modern performance to a pickup that was designed for utility all without removing the bed of the truck. QA1 engineered a unique bolt in torque arm design that maximizes performance without the inherent binding issues of other 4 link systems. This provides superior control over suspension movement, resulting in a smooth ride and great handling characteristics. Dialing