Power Brake Booster, 1964-1972 GM, Universal, 7 in. Dual Diaphragm, Gold Zinc Finish, Includes:, (1) 4 3/4 in. Pedal Rod Extension, (2) Booster Brackets, (1) Steel Clevis (3/8 in.-24 Thread)|JEGS Power Brake Booster for 1964-1972 GM Cars, Universal [7 in. Dual Diaphragm].