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

I had to go look and remeasure to be sure- but my YJ is 58", wich is about a half inch narrower than the A body? Spring pads are identicle spot, only wrong side of the axle. Looks like I am going with the cooper 205s, so fitment should be pretty good.
the stock 7.25" in my duster is 57 1/8".

YJ being 58" opens up more possibilities, if I can find a rear from one. TJ's are easier to find. do you know if the TJ's are the same width as a YJ rear?