1973 1987 Cummins 6BT to Chevy Engine Drop Crossmember GF GMDC oil coolers 25 8 V 1977 1982 seatbelts and accessories 25 8 V 1977 1982 Oldsmobile Delta 88 3 25 8 V 2003 Chevrolet Silverado 2500 HD Base 4 This drop crossmember is a direct bolt in utilizing OEM hole locations Year Make Model Submodel 1975 1986 Chevrolet K10 Suburban 1975 1976 GMC K15 1975 1986 Chevrolet K20 1973 1974 Chevrolet K20 Pickup 1975 1986 Chevrolet K20 Suburban 1975 1978 GMC K25 1973 1974 GMC K25 K2500 Pickup 1979 1984 GMC K2500 1977 1986 Chevrolet K30 1973 1974 Chevrolet K30 Pickup 1977 1978 GMC K35 1979 1984 GMC K3500 1987 Chevrolet V10 1987 1988 Chevrolet V10 Suburban 1989 1991 Chevrolet V1500 Suburban 1987 Chevrolet V20 1987 1988 Chevrolet V20 Suburban 1989 1991 Chevrolet V2500 Suburban 1987 Chevrolet V30