Our rear window was atrocious. The sides and bottom that supported the window had completely disintegrated. Fortunately, OPG has the lower portion available as a patch panel. Unfortunately, the sides would have to be hand-formed. Bernal separated the old portion away from the cab, cut the sides away from the bed, and replaced it with the OPG patch panel. He smoothed over the new welds with a grinder and applied filler to even everything out.