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UMI bolt‑in rear coilover conversion brackets for 1964–1972 GM A‑Body applications support 2½" racing coilovers and provide full ride height, 175 lb spring rate and damping adjustment with trailing arm tuning. Reinforced upper mount and FEA‑designed lower brackets bolt to Quick Performance rear mounts, allowing instant center calibration via multiple positions. Built and tested in Philipsburg, PA using US‑sourced materials.
UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -1in to +1in Ride Height - 175lb Spring Rate
