thanks yall!
wheels are 17x9 and 17x10 +25. tires are 235/45 and 255/40.. im pretty sure about the sidewalls, but not certain. i was really worried about the stretch in the rear, but it's not drastic at all.. just enough to tuck the tire profile back into the wheel well so the wheels look like they fit haha
the fronts were rubbing pretty bad, but all i had to do was hammer in the little pan head screws that hold the inner fender lining to the wheel arches a bit.. not enough to crack paint, no rolling was required either. NO issues now, daily driven for almost a year like this. The rears never rubbed, probably because of the 255's and the fact that my eibach/ tokiko setup didnt really slam the rear. i really love the fitment/ stance the wheels give the car. I was also worried the 17x10 +25's would stick out too far, but i think theyre about perfect
edit: i would positively NOT go with the 10.5" +27 offset deep dish mustang replica wheels. Having fitted these 10's on my car, the 10.5's would look really stupid. i couldn't find much info about mustang replica wheel fitment when i was researching getting these, so be warned- deep dish 10.5's will look STUPID!