woohoo, i get to add my opinion on my (new) k-tec zorst...
when you first start the car up youll wonder why u just paid over 200 notes to make your car all noisy etc, then youll boot it out of where it was fitted and appreciate the fact it seems to rev a bit easier... then youll drive a few miles and pull over to check you still have an exhaust coz of all the noise youre making. after you realise you do still have an exhaust youll have to spend some time actually lining it up right if you let some monkey fit it wonkey, but when thats done youll grow to love the sound, and will find your mpg suffering as you put your foot down and then back off whenever you see a crowd so they can hear your exhaust go *burble pop pop pop*
then youll put your foot back down so they can hear you go brrrrrrrrrrrrrrrr! lol
however, dont touch it lovingly after you have been out caning the car around tho, or you will be adding a burnt hand to the list of features above!