jetex supply 2 special brackets that replace the cars original brackets. so the fit is perfect. without these, it wont fit right.
theres the backbox one which makes it sit properly, then the mid box bracket, which had a piece of rubber that once the exhaust is fitted, presses against the chassis so its as high off the beam as possible, without knocking on the underside of the car. genius!
i had problems with the rear silencer knocking on a h+r roll bar. easily fixed. and i dont find this an issue as the bar is an aftermarket item.
if you go for the 2.5" system, it will be loud. but my 3 box 2" system is perfect. maybe a little too restraint