Kit contains a ring and pinion set, positraction unit, and installation parts

1958-1964 Chevrolet Biscayne (Rear) (Note: GM 55P 8.4 in. Rear; Gear and Install Kit Package; Includes Thick 4.11 Ratio Gear Set, Master Install Kit and 17 Spline Limited Slip Carrier); 1962-1964 Chevrolet Chevy II (Rear) (Note: GM 55P 8.4 in. Rear; Gear and Install Kit Package; Includes Thick 4.11 Ratio Gear Set, Master Install Kit and 17 Spline Limited Slip Carrier); 1955-1961 Chevrolet Nomad (Rear) (Note: GM 55P 8.4 in. Rear; Gear and Install Kit Package; Includes Thick 4.11 Ratio Gear Set, Master Install Kit and 17 Spline Limited Slip Carrier); 1955-1964 Chevrolet Bel Air (Rear) (Note: GM 55P 8.4 in. Rear; Gear and Install Kit Package; Includes Thick 4.11 Ratio Gear Set, Master Install Kit and 17 Spline Limited Slip Carrier); 1956-1962 Chevrolet Corvette (Rear) (Note: GM 55P 8.4 in. Rear; Gear and Install Kit Package; Includes Thick 4.11 Ratio Gear Set, Master Install Kit and 17 Spline Limited Slip Carrier); 1959-1964 Chevrolet El Camino (Rear) (Note: GM 55P 8.4 in. Rear; Gear and Install Kit Package; Includes Thick 4.11 Ratio Gear Set, Master Install Kit and 17 Spline Limited Slip Carrier); 1958-1964 Chevrolet Impala (Rear) (Note: GM 55P 8.4 in. Rear; Gear and Install Kit Package; Includes Thick 4.11 Ratio Gear Set, Master Install Kit and 17 Spline Limited Slip Carrier)