1992_9th_gen

I'm sure this has been asked before but i couldn't find anything so here goes. My '92 has pacer 15x8 wheels with 4 inches of backspacing. i wanted a set of stock bullet hole style wheels and i found some for a good deal. I know my truck won't sit quite as wide but i was wondering if any of ya'll knew the stock backspacing for those wheels and if you had any of pics of them from the front.

mustangGT90210

The stock bullet holes are 15x7.5, and I want to say they have a 4.5" backspace. 31x10.50 will rub the radius arm with a 4.5" BS, but not with a 4" BS. Basing this off my old truck. Had stock 15x7.5 with 31x10.50, rubbed, went to a 15x10 4"BS and no rub