Well, if you can find any plate, you can always get it put back into shape. I sent my pair of old rusted and bent black and yellow California plates to www.tagdr.com and the guy worked magic on them. They came back looking better than brand new. The guy does AMAZING work. I think he put a picture of my car's rear with the plate on it on his photo page.. lol

Anyway, its great if you can find a good condition plate, but if you cant, you can always pay to have it restored. And if you go the restore route, I would recommend TagDr.com based on first hand experience by myself and bout 4 of my other friends.