When I bought my 71 chevelle the rear seat shelf was removed. I don't know the intentions of why the previous owner did this, however I'm dealing with it now. I'm having a bit of trouble finding a scrap car that I can get it from and weld into my car. For now I was thinking of cutting 'something' to fit in the meantime. Just looking for some ideas to use for the material that would work well. I thought about wood, but that's a bit porous for my climate. Any suggestions?