I once saw listed here I thought a link to a company that sold new aftermarket interior bed side panels for around $400. Not sure if anyone knows of that link.
More great info from everyone, thanks. I have my old ones I can copy and have thought of using the white fiberglass pebble finish sheeting often used in food plants and restaurant kitchens. Some light padding glued to it and then some sort of fabric covering should make them pretty nice. The FG boards will never get soft or absorb any moisture like wood or interior card board will either. We'll see what I come up with in the near future and will post here. Again, thanks for all the great posts.
Ted