I love my R35 GT-R but do feel it needs more noise coming out of the back. Ive got the car booked into Litchfields on Monday to have the Y-Pipe fitted which im hoping will improve the sound a little bit. But because this will immediately invalidate the exhaust part of the warranty i may as well look at fitting a full system. Have any owners fitted a full system yet and what is the sound like?? Any performance improvements?? What options are there available?? Are there any RACE versions available in the UK yet??? I love a loud exhaust so any advice much appreciated.