For 1973-1991 GMC Jimmy Rocker Panel Backing Plate Left - Driver Side 38678PF

For 1979-1986 GMC K1500 Rocker Panel Backing Plate Left - Driver Side 94725WV

For 1977-1978 GMC K35 Rocker Panel Backing Plate Left - Driver Side 96295ZTZQ

Left - Driver Side Rocker Panel Backing Plate For 1977-1978 GMC K35 ZD539JJ

For 1979-1986 GMC C3500 Rocker Panel Backing Plate Left - Driver Side 23784VP

Left - Driver Side Rocker Panel Backing Plate For 1975-1978 GMC C15 1977 SK137QS

Left - Driver Side Rocker Panel Backing Plate fits GMC K35 1977-1978 52ZWMJ

For 1975-1978 GMC K15 Rocker Panel Backing Plate Left - Driver Side 61257BSTF