If you need a plate for the classic sitting out in the garage you might want to check these people out. Based in Fort Lauderdale, Florida, Licenseplates.tv has been specializing in custom-made vintage plates from every state in the Union, as well as European and International plates, for over 20 years. Starting with a colored piece of aluminum, the blank is embossed with your custom numbers and letters from correct tools and dies. Raised letters are then painted and sealed in a clearcoat for long-lasting protection.
Check them out at http://www.licenseplates.tv/ or give them a call at 1-800-491-2068.