This is a new Pair of WILWOOD 140-11291-BK GM A F X Body Full Size Front Brake Calipers Dual Piston Loaded with Stainless Brake Line Hoses Banjos Fittings. 1969-74 X-body with single piston factory disc brakes or for cars with disc brake conversions using the single piston caliper like the 1969 and newer cars.