Chevelle 64-72 (GM A-Body) - Rear Coil-Over Conversion (Bolt-On or Weld-In) - Includes billet-aluminum VariShocks and springs with upper and lower mounts. Shock options for fixed-valve or single-, double- or 4-way adjustable with remote reservoir. Baseline spring rate is 200 lb/in with optional springs from 110 to 400 lb/in. Shock mount options include direct-fit mounts or weld-in custom-fit upper crossmember and weld-on axle brackets; both options include adjustable height lower mount.