I have a set of 15" 1979 Firebird Rally Wheels. Will they fit on my '65 Corsa Turbo Coupe? If so, what size tire would you recommend? I do not want to do any major alterations to the suspension or body. Thanks for any help you can give me. John Johnson 65 Corsa 180 Turbo Coupe 65 Corsa 140 conv 64 Monza Conv