I want to put some nice retro type wheels on my 68 Cougar with Goodyear Raised Letter tires. Today I have the stock 14" wheels and tires. I think that a 15" wheel would look good on this car. I have looked at several of the wheel and tire sites online but of course none of them go back far enough for a 68 Mercury. Can anyone shed some light on this or point me to a good article or site?