Fits Chevy GMC 3 4 Ton Suburban C25 K25 Truck(77 87) 4" Lift 52" RR Spring 25030 pre bent brake lines complying with legal standards for 93356 FBHB complying with legal standards for pre OBDII Federally registered vehicles Removes Factory Resonators 4 Inch Lift Kit 52 Inch RR Springs Chevy GMC C20 K20 C25 K25 Truck (77 87) Year Make Model Submodel 1977 1980 Chevrolet K20 Suburban Custom Deluxe 1977 1986 Chevrolet K20 Suburban Scottsdale 1977 1986 Chevrolet K20 Suburban Silverado 1977 1981 Chevrolet K20 Cheyenne 1977 1980 Chevrolet K20 Custom Deluxe 1977 1986 Chevrolet K20 Scottsdale 1977 1986 Chevrolet K20 Silverado 1977 1978 GMC K25 Suburban Base 1977 1978 GMC K25 Suburban High Sierra 1977 1978 GMC K25 Suburban Sierra Classic 1977 1978 GMC K25 Suburban Sierra Grande 1977 1978 GMC K25 Base 1977 1978 GMC K25 High Sierra 1977 1978 GMC K25 Sierra Classic 1977 1978 GMC K25 Sierra Grande 1979 1986 GMC K2500 Suburban Base 1979 1986 GMC K2500 Suburban High Sierra 1979 1986 GMC K2500 Suburban Sierra Classic 1979 1982 GMC K2500 Suburban Sierra Grande 1979 1986 GMC K2500 Base 1979 1986 GMC K2500 High Sierra 1979 1986 GMC K2500 Sierra Classic 1979 1982 GMC K2500 Sierra Grande 1981 1986 Chevrolet K20 Suburban Custom 1981 Chevrolet K20 Suburban Deluxe 1981 1986 Chevrolet K20 Custom 1981 Chevrolet K20 Deluxe 1987 Chevrolet V20 Suburban Custom Deluxe 1987 Chevrolet V20 Suburban Scottsdale 1987 Chevrolet V20 Suburban Silverado