I have a litespec exhaust that was designed for an STI on my Forester. Depending where in MA you are, my car is in storage in S.NH, if you want to come to look at the exhaust to see if it looks like it would fix your fitment issues.
I totally forgot about this, but if you are still looking. I am fairly flexible...My car isn't registered at the moment, so you would have to come up to look a it, but the car is only about an hour from Cambridge.dra2120, that's really generous of you. Assuming you have some flexibility around timing, let me get the car back on the ground and see if it is at all driveable. If it is, I can try and drive it up to you. I live in Cambridge, so I'm guessing it would be a decently long drive for you. Thanks for offering, though.