HQ Series ShockWaves fit your 1970-81Camaro, Pontiac Firebird and 75-79Chevy Nova just like CoilOvers and deliver a great ride qualityandhandling withadjustable ride height. Integral air spring and shock absorber assemblyis a proven design. 24-position rebound adjustment helps fine tune the shock to your driving demands. Advanced monotube shock designfeatureslargepistons, heavy duty shafts, and impact-forged bodies. Shock calibrations and air spring specs are based onmore than 20 years of extensive air ride development on the street, highways andrace tracks