80-82 C60 Bore: 1.5 in., With Single Hydraulic System, Wagner FE57530, With Drum Brakes. 80-82 C50 C5D042 Bore: 1.5 in., With Single Hydraulic System, With Wagner Cylinder, With Drum Brakes. 80 C70 Bore: 1.5 in., With Single Hydraulic System, Wagner Vacuum Booster (1979), With Drum Brakes.