Had not considered making one, but you got me on to it. That will be pretty easy. Should be able to cut a ring. Use some thick matting with slit and then dress this up with a rubber or naugahyde skirt. Case closed.
~ HB 1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery 1962 Chevrolet C10 1962 Suburban