T, I can help you with this later today. Right now I don't have access to the pictures of the two cars here to post. I can tell you one has 10" Cragar S/S wheels with 4.25" backspace with Mickey Thompson Sportsman Pro 28 x 12.50 tires and no tire clearance problems. The other car has 8-1/2" Americans with 3-3/4" backspace, and is running 275/60 BFG T/A's. I think I may have some pictures of American 200s wheels (originals) 10" with 275/60 tires, and US Indy mags 8-1/2" wide, with M/T L60-15 Indy tires. One thing, you cannot run a wheel with more than 4.25" backspacing without getting into the inner wheelhouse. Suspension will also play a role into what hits or fits....................RatPack...............