UMI Performance 59-64 GM B-Body Rear Upper Control Arm MountNote: This item is sold each. Please verify whether your vehicle has (1) or (2) upper control arms. Six cylinder and most small block vehicles were supplied with a 3 link rear suspension while big block vehicles used a 4 link set up. This Part Fits: Year Make Model Submodel 1959 1964 Chevrolet Bel Air Base 1959 1964 Chevrolet Biscayne Base 1960 Chevrolet Biscayne Fleetmaster 1959 1964 Chevrolet Impala Base 1964 Chevrolet Impala SS