15 x 7s, what size would you run on a 68 four door dart ?

I do not honestly know but can actually find out- I have 11 jeeps, and my TJ is my daily driver, but I would have to have the rear tires off it- I don't have a spare rear end for that laying around- I bought the jeep cheap because the 35 was wrecked, but got another one off Oahu, been driving it since 2017. I am pretty sure the TJs are wider.
everything I've found online it said the TJ's were 60.5" d-t-d, but I thought I also found that YJ and TJ axles were the same width....of course, I found enough stuff online saying XJ rears were 59.5" that I felt OK picking one up w/o checking first, but the D35 from one I picked up was 60.5". maybe there's a width difference between the danas 35's and corporate 8.25's in XJ's?