cujo, I got my panels from a small outfit close to my home that sell alot of repo. parts. we have a couple of them close by. I have seen several different panels and they look like the same manufacture across the BIG pond.The panels I got from Chevy duty also looked and fit about the same but were a different color.I did not brace the floors but did cross brace the door openings by spot welding 1/2" square tubing.