I totally got a cheeky deal on my jetex, the site has been taken down now but i think it was a redundant old site of TSR performance, I got the cat back non res system for £300, cheapest now is about £360. The loudness all depends on how you drive, even at full floor its nowhere near that loud either, at idle and going about slowly its near inaudible, literally. I just went on a 50 mile motorway run this week and the tyre noise was all i heard, no exhaust. Theres pics of my system, in the box and installed and also a vid of what mine sounds like on page 15 and 16 http://www.vr6oc.com/for