Brand New Ridetech Front HQ Coilovers. This kit fits 1958 Chevrolet “B” Body (Part #11053510). Upgrade your 1958-1964 GM B-Body with HQ Series adjustable Coilovers. You’ll get high performance handling, exceptional ride quality and the ability to adjust your car’s ride height. 24-position rebound adjustment helps you fine tune the shocks to your driving preferences and vehicle demands. With large 1.834″ pistons, heavy duty 5/8″ shafts, and impact forged bodies, HQ Series Coilovers are built to last. Ridetech develops our shock calibrations and spring rates through thousands of cross-country test miles, on our exclusive test track and at competition events from coast to coast. We understand the suspension needs of your Caprice, Biscayne, Impala or other B-body better than any other company. This front system includes two HQ Series Coilover shocks and two Hyperco coil springs with proper spring rate. NOTE: This product requires the use of Ridetech StrongArms (#11053699 Upper & #11052899 Lower) for proper installation. Compatible with: Chevrolet: 1958-1964 Bel Air 1958-1964 Biscayne 1958-1964 Brookwood 1958-1964 Del Ray 1959-1960 El Camino 1958-1964 Impala 1958-1964 Kingswood 1958-1964 Nomad 1958-1964 Parkwood You can view and download the assembly/instruction booklet here and here.