GM 8.875in. 12 Bolt Passenger Car 4.10 Up Limited Slip For Use With 30 Spline Axles;For use With 4.10 And Up Gears; Replaceable Carbon Fiber Clutches;All Forged Spider And Side Gears; Rebuildable CHEVROLET EL CAMINO BASE CUSTOM 1964 1965 1966 1967 1969 1970 1971 1972 1973 3.2L (194) 3.8L (230) 4.1L (250) 4.6L (283) 4.6L (4638cc) 5.3L Chevy Small Block (327) 5.4L Chevy Small Block (327) 5.7L (350) 5L Chevy Small Block (307) 6.5L Chevy Big Block (396) 6.6L Chevy Big Block (402) 6.6L Chevy Small Block (400) 7.4L Chevy Big Block (454) GAS Eaton Eaton GM 8.875 Inch 12 Bolt Passenger Car 4.10 Up Limited Slip - 19555-010 19555-010 Differentials