1973-1975 Chevrolet El Camino | Position: Rear | Note: "9 1/2"" Rear Drum". 1973 Chevrolet Chevelle | Position: Rear | Note: exc Wagon. 1964 Chevrolet El Camino | Position: Rear | Note: "7/8"" Bore". 1964 Chevrolet Chevelle | Position: Rear | Note: "7/8"" Bore".
