Is the cat-back exhaust system the same for fox bodies and 94-95 mustangs, and if they're slightly different how much modification does it take to use them?
The differences are very very small but i can tell you that from the mufflers back (the tail pipe section) is different enough that it's a huge PITA to make it all fit and work without rubbing the axles. I had '94+ tail pipes on my car and they just didn't fit so good.
I will let you all know in a few weeks. I have the 01 GT motor in my 81 notch. Stock manifolds, BBK O/R H-pipe. That all fits. I have a MAC tru fit catback from the 01, that I have not installed yet. I am getting there soon. With all the other stuff I made fit this old car, I will make the exhaust work too!!!