Superiorreproductions in OEM thickness stamped steel. All new tooling. Includes hole for clutch return spring on LH mount. Coated black. GM Group #: 0.029 GM Part #: 3980938 RH, 3955183 LH Officially Licensed GM Restoration Parts. .67-68 Camaro 302, 327, 350, 69 Camaro 307, 327, 68-72 Nova 307,327.