Right - Passenger Side Rocker Panel Backing Plate For 1975-1978 GMC K15 NQ792HY

For 1975-1986 Chevrolet K20 Rocker Panel Backing Plate 88164ZC

Left - Driver Side Rocker Panel Backing Plate fits GMC K15 1975-1978 25HYCX

For 1975-1978 GMC K15 Suburban Rocker Panel Backing Plate 45823MD

89KV57X Right - Passenger Side Rocker Panel Backing Plate Fits 1975-1978 GMC K25

57MK81S Right - Passenger Side Rocker Panel Backing Plate Fits 1975-1978 GMC C15

For 1975-1978 GMC K15 Suburban Rocker Panel Backing Plate 62767PSDT

For 1975-1978 GMC C15 Rocker Panel Backing Plate Right - Passenger Side 53238XT