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

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

35BC38T Right - Passenger Side Rocker Panel Backing Plate Fits 1975-1978 GMC C15

Right - Passenger Side Rocker Panel Backing Plate For 1975-1978 GMC C15 GD163FW

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

Right - Passenger Side Rocker Panel Backing Plate fits K25 1975-1978 92GFXHBP

For 1975-1978 GMC C35 Rocker Panel Backing Plate Right - Passenger Side 57364SD

For 1975-1978 GMC C25 Rocker Panel Backing Plate Right - Passenger Side 56175JM