Body Mounts & Bushings Master Kit - 66-72 A1967 72 A body GM "Energy Suspension" Master Kit from USA's "ENERGY SUSPENSION" a full assembly kit in Polyurethane, available in Red or Black. NOTE.. Included in the kit is both Round and oval rear lower bushes as these cars were built with both.. . do no need to chase up a wrong kit. THIS KIT GIVES BOTH .. so you are covered. Hyper Flex(TM) Energy Suspension US made and engineered Polyurethane Components do not wear or deteriorate from exposure to