I have a '63 Fury Convert with 14x 6-inch Magnum wheels and Firestone wide oval (from Coker tires). I would like to upgrade to 15 inch with the widest radial tire set up possible. However, the tires I have (front) seem to just clear as it is when locked r/l! I installed a factory sway bar (police package) so this is one issue and there is just about no clearance remaining between the frame when locked either direction at the rear of the tire. I've read of owners putting larger tires on with no problem...what am I missing? Thanks for any advice.