I was looking at truck a little today. I was trying to make room around it... I did see 2 of the rear bumper end but they are pretty bad shape.. I noticed the bed. The metal side walls have holes for fenders in them. I have 4 flat pieces of yellow fiberglass about 2 1/2 ft long. What are these? Does the shop Maneal out of Jim Carters show the cameo bed parts?