HQ Series ShockWaves® fit your 1970-81 Camaro, Pontiac Firebird and 75-79 Chevy Nova just like CoilOvers and deliver a great ride quality and handling with adjustable ride height. Integral air spring and shock absorber assembly is a proven design. 24-position rebound adjustment helps fine tune the shock to your driving demands. Advanced monotube shock design features large pistons, heavy duty shafts, and impact-forged bodies. Shock calibrations and air spring specs are based on more than 20 years of extensive air ride development on the street, highways and race tracks