Energy Suspension Buick/Cadillac/Chevrolet/OldsMobile/Pontiac/GM Trucks Red Clam Shell Type Engine MA true performance application component for cars, trucks, hot rods and racing competition vehicles yet designed to be also used for street vehicles. Soft running enough to absorb vibrations for street use yet rugged for racing use. When required a torque resistant safety interlock design is used that is comparable in strength to those too hard running metal mounts. Replaces the original, short lived and typically too soft rubber mounts and outdates