The bed that I purchased from a wrecking yard in Phoenix had a metal floor welded into it. I thought that would be kind of nice then I could use the bed to haul things in if wanted to. The side walls were so bad that I welded in sheet steel on both sides and feathered it into the pillars so now I have a double walled truck bed and I just used herculiner on the inside of the bed. About the only piece of body sheet metal I bought was the tailgate well other than the patch panels. After painting the tailgate I still had a little clear left over so I cleared the original tailgate. You can still see a little bit of the original green color that it was. It'll make a nice wall art