For 1977-1978 GMC K35 Rocker Panel Backing Plate 73539QH

For 1977-1978 GMC K35 Rocker Panel Backing Plate 15815YYJF

For 1977-1978 GMC K35 Rocker Panel Backing Plate Left - Driver Side 76843YRGP

For 1977-1978 GMC K35 Rocker Panel Backing Plate Left - Driver Side 17184KK

For 1977-1978 GMC K35 Rocker Panel Backing Plate Right - Passenger Side 81562TF

Right - Passenger Side Rocker Panel Backing Plate For 1977-1978 GMC K35 WY274WP

For 1975-1978 GMC C25 Rocker Panel Backing Plate 75173MB 1976 1977

For 1975-1978 GMC K25 Suburban Rocker Panel Backing Plate 82814SK