I am on the market for a performance exhaust for my '97 Outback, and I am wondering what is out there that doesn't need any modification to work. MRT tells me that they can make one, definitely aluminized and possibly/probably stainless. Stromung makes both as well. Those are the only ones that I know of. I am hoping that Borla does, but I am thinking that they probably do not. What else is there?