For unmatched ride quality for the street and strip, turn to QA1's Mustang II Coil-Over Shocks. With double adjustable, single adjustable, drag "R" series adjustable and non-adjustable valving options, you will find the right coil-over conversion system for you. Adjustable Coil-Over Shock Features:, Available in independent compression and rebound double adjustable, simultaneous compression and rebound adjustable, or drag "R" Series adjustable, Lightweight Billet Aluminum Coil-Over Shocks, Made in the USA, Easy, Bolt-In Installation, Ride Height Adjustable, 100% Dyno Tested and Serialized, Serviceable and Rebuildable by QA1 Authorized Service Centers, Made in the USA, , Non-Adjustable Coil-Over Shock Features:, Steel, Stock Appearing Shocks, Easy, Bolt-In Installation, Coil-Over, Ride Height Adjustable, , All QA1 aluminum shocks are 100% dyno tested and serialized before leaving our Minnesota factory, ensuring your shocks are of the highest quality. .