QA1 Pro Rear Coil-Over Shock System w/ Single-Adjustable Shocks GBDL3 many engine builders actually modify

many engine builders actually modify the distributor's reluctor to obtain different timing for each specific cylinder

Low-friction

Gauges - Configurable virtual dashboard allows the user to create their own gauges or use one of the built-in popular AutoMeter styles like Ultra-Lite

1980-1981 Pontiac Firebird

Includes New 5-ft Shift Cable

QA1 Pro Rear Coil-Over Shock System w/ Single-Adjustable Shocks GBDL3 many engine builders actually modifyUpgrade your rear end with QA1's Pro Rear System. Available in double adjustable, single adjustable and ride sensitive valving non adjustable options,each adjustment has been carefully defined to provide the ideal horse curve to maximize performance. With evenly spaced valving changes throughout the adjustment range, there are no jumps when adjusting between any two clicks. These Pro Rear Systems are commonly used in drag racing, street performance