thats the race version of the GT3 RS.....the only Porsche I'd drive....maybe the GT2, but its kinda bitchy with its turbo engine.
oh and I got your mail.
Magnaflow does some exhausts and Remus.....but I don't know how good they are. It you had a BMW I'd recomend Reuter Motorsport (like I have), Eisenmann or Bastuck.
There are better ones, but I don't see any reason why paying over 2000 Dollar for an exhaust.