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

I put the YJ rearend on the springs - the pads fit perfect, wouldn't even have to weld- but have 3" wider on each side for a total of 6". Tire will rub, even with 205s on stock steelies. So I am ordering new axles for the 7/1/4 unless someone here sells me a set of BBP.