They're Mopar reproductions from Wheel Vintiques. You would need to take careful measurements on your car to determine the maximum backspace (allowing for tire section width/sidewall) before the tire contacts your leaf springs, inner fender, etc. I can't say for sure since I don't have a stock axle width. (I also have offset leafs but would still have plenty of clearance if they weren't). I know there are guys here on the board who run 275 tires on a stock A-body axle and can tell you the wheel backspace required to tuck the tire into the opening without rubbing anywhere.
That's just the register on the end of the axle.
