Left - Driver Side Rocker Panel Backing Plate fits C15/C1500 Pickup 55SHFT

Left - Driver Side Rocker Panel Backing Plate fits C1500 Suburban 12DJSV

Left - Driver Side Rocker Panel Backing Plate For GMC C15 Suburban WP934FP

Left - Driver Side Rocker Panel Backing Plate For GMC C1500 Suburban GN864JZ

Right - Passenger Side Rocker Panel Backing Plate fits C15/C1500 Suburban 87NVZS

For 1973-1974 GMC C15/C1500 Suburban Rocker Panel Backing Plate 64719GM

For 1973-1974 GMC C15/C1500 Suburban Rocker Panel Backing Plate 93338NQMD

59MR67Q Left - Driver Side Rocker Panel Backing Plate Fits 1975-1978 GMC C15