I have the 3" exhaust and for a DIY kit it was crap. Has needed modification to fit as it was hitting the front shaft, half the gaskets were bent amd bolts, washers etc missing. The packaged was delivered with the exhaust exposed from the packaging. There after sales service was crap.
Luckily there is a bloke in town whobuilds systems in3' and he was able to fix it up. Turns out it would have been cheaper to get him to custom make one - which is what I would do if I was in need of one again.