´67 notchback cuda mini tubes

You can stuff a 12.5 inch wide tire under there if mini tubbed but you will need a 15x10 wheel with 7.5" backspacing.

I was running M/T sportsman pros with a 29x12.5x15lt tire.

Keep in mind the forward portion of my rear wheel opening is moved 1.5" forward to allow for the tall tire.

As you can see by the first pic, this is about all the tire you can stuff under there with about .5 inch to spare on either side, perfect fit.
There are only a few rims you can get with the 7.5 inch backspace and the weld draglites are one of them.
I know people are running similar combos with slightly different wheel offset but this whee/tire combo is a tried and true set up that I copied from my buddies 67 dart using his wheels as a test fit.
I did not shave the wheel lip off, but like I said, the rear wheel opening is massaged forward 1.5 inches in the front portion only.