It was 2006 when I took the Subaru to them in Southend they built the whole system headers back and to any casual observer the tail pipes even look OEM just a little bigger. So from outside it looks and sounds stock (with a bit more base) off the line it scares super cars and mid range is epic, even more fun as we are both in our seventies and that really shakes up the Porsche brigade.
There have been many debates on the US websites regarding straight pipes H pipes or X pipes let us know what you end up with
Dave