1973 - 1976 Chevrolet 500 Series; 1973 - 1976 Chevrolet 5000 Series; 1973 - 1976 Chevrolet 600 Series; 1973 - 1976 Chevrolet 6000 Series; 1980 - 1987 Chevrolet B60; 1980 - 1987 Chevrolet C50; 1980 - 1990 Chevrolet C60; 1980 - 1990 Chevrolet C70; 1982 - 1987 Chevrolet P40; 1983 - 1987 Chevrolet P60; 1983 - 1984 Chevrolet S7; 1977 - 1979 Chevrolet School Bus Chassis B6P042; 1977 - 1980 Chevrolet W6N042; 1977 - 1980 Chevrolet W7N042; 1973 - 1976 GMC 5000 Series; 1973 - 1976 GMC 550 Series; 1973 - 1976 GMC 5500 Series; 1980 - 1987 GMC B6000; 1980 - 1987 GMC C5000; 1980 - 1990 GMC C6000; 1980 - 1990 GMC C7000; 1982 - 1987 GMC P4500; 1983 - 1987 GMC P60; 1983 - 1987 GMC P6000; 1977 - 1980 GMC W6N042; 1977 - 1980 GMC W7N042