Ridetech 63-72 Chevy C10 Rear Coilover System HQ SeriesRear Coil Overs for 1963 1972 C10. For use with Ridetech lower arms. Includes a pair of rebound adjustable shocks, springs, spring mounts and delrin spring washers. This Part Fits: Year Make Model Submodel 1963 1972 Chevrolet C10 Pickup Base 1966 GMC 1000 Base 1963 1965 GMC 1000 Series Base 1966 GMC 1500 Base 1963 1965 GMC 1500 Series Base 1967 1972 GMC C15 C1500 Pickup Base 1966 GMC I1500 Base 1966 GMC K15 K1500 Pickup Base