Left - Driver Side Rocker Panel Backing Plate fits Chevy K20 1975-1986 56XVBV

Left - Driver Side Rocker Panel Backing Plate fits Chevy C10 1975-1986 44YTVV

Left - Driver Side Rocker Panel Backing Plate fits Chevy K10 1975-1986 41SKXT

Left - Driver Side Rocker Panel Backing Plate fits Chevy C20 1975-1986 28MWHZ

57VD29R Left - Driver Side Rocker Panel Backing Plate Fits 1975-1986 Chevy C30

Left - Driver Side Rocker Panel Backing Plate fits Chevy C30 1975-1986 61PNYB

Left - Driver Side Rocker Panel Backing Plate fits Chevy K30 1977-1986 28WDSW

12FH51N Left - Driver Side Rocker Panel Backing Plate Fits 1975-1986 Chevy K10