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Fits the following ;

GM Electra 1982-1985

GM Lesabre  1983-1985

GM Regal 1982-1987

GM Caprice  1977-1981

GM El Camino  1978-1987

GM Camaro  1982-2009

GM Firebird  1982-2009

GM Malibu 1978-1987 

GM Monte Carlo 1978-1987

GM Delta 88  1975-1985

GM Parisienne 1978-1981

GM Safari van 1986-2005

GM Astro van 1986-2005

All GM 7.5″ rear differentials 1978-1987

All GM 7.6″ rear differentials 1988-2005

Ring and pinion

7.5″ ring gear

7.6″ ring gear

3.23 ratio

10 bolt cover

Note : Case Change: 3:08-down ratio/3:23-up ratio