What are the difference in 1956 Ford regular car and Thunderbird steering wheel besides having little indents around the bottom of the wheel? And, will a Ford p***enger car horn ring fit on a Thunderbird wheel of the same year. I have '56 Ford steering wheel I am trying to repair but I think it is too far gone. I can only find TBird repops in the stock 18inch size (I don't like the quality of the newer 15 inch ones, plus I've already chromed the p***enger car horn ring.)