Are there any stainless steel STi knockoff exhaust tips floating around? I like the little "STi" logo on it, but only want the tip and muffler, as I'm having a muffler shop do custom piping for the rest of my system.
Get a machine shop to etch "STi" into a regular tip of your choice. As for the muffler, a Flowmaster or Magnaflow will be cheaper if cost is a problem.
Depending on how broke you are & how much you want the real thing, try looking for a used, takeoff 'backbox' like i got for my RS. I had no way to verify, but it supposedly came off a P1. It doesn't matter where it came from since it has the stamped 'STi' tip you speak of and it has the BEST mellow boxer burble (w/resonator) to it!