Yukon Dura Grip positraction for GM 12 bolt car with 30 spline axles, 4.10 & up Vendor Notes: 1964-1970 Buick Wildcat (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1964-1972 Chevrolet Biscayne (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1964-1968 Chevrolet Chevy II (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1964-1972 Chevrolet Chevelle (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1964-1972 Chevrolet Bel Air (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1967-1972 Chevrolet Camaro (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1966-1970 Chevrolet Caprice (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1965-1972 Chevrolet El Camino (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1964-1972 Chevrolet Impala (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1970-1972 Chevrolet Monte Carlo (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1969-1972 Chevrolet Nova (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1970-1972 Pontiac GTO (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio); 1969-1972 Pontiac Firebird (Rear) (Note: Yukon Dura Grip Positraction; GM 12 Bolt Passenger Car; 30 Spline; 4.10 and up Ratio)