Rear: Chevrolet Blazer 1974, C10 77-75, C10 Pickup 74-69, C10 Suburban 77-74, C20 77-75, C20 Pickup 74-61, C20 Suburban 78-71, C30 Pickup 70-61, G20 77-75, G20 Van 74-67, G30 77-76, G30 Van 1971, K10 77-75, K10 Pickup 74-67, K10 Suburban 77-74, K20 77-75, K20 Pickup 74-72, K20 Suburban 78-71, K30 Pickup 70-68, K5 Blazer 77-75, P10 77-75, P20 77-75, P20 Van 74-68, P30 Van 70-68; GMC C15 77-75, C15 Suburban 77-75, C15/C1500 Pickup 74-67, C15/C1500 Suburban 1974, C25 77-75, C25 Suburban 78-75, C25/C2500 Pickup 74-67, C25/C2500 Suburban 74-73, C35/C3500 Pickup 70-67, G25 77-75, G25/G2500 Van 74-67, G35 77-76, Jimmy 77-74, K15 77-75, K15 Suburban 77-75, K15/K1500 Pickup 74-67, K15/K1500 Suburban 1974, K25 77-75, K25 Suburban 78-75, K25/K2500 Pickup 74-72, K25/K2500 Suburban 74-71, K35/K3500 Pickup 70-68, P15 77-75, P15/P1500 Van 1974, P25 77-75, P25/P2500 Van 74-68, P35/P3500 Van 70-68