Just abit of input, if you want a full system but cant afford milltek prices then have a look at the 2.5" twin round system from Jetex, ive had mine about 6 months now and it makes the car really sound nice, reasonably quite with just a slight deep tone to it on tick over, then all way through revs its nice, not too loud, but if you stamp it while in the boost, you get quite a raspy sound, its the kinda thing that makes the hairs on the back of your neck stand up when i here my dad drive the car past!! Only a suggestion though, Millteck are the muts nuts!!