The exhausts are all the once you get to the centre box. Only difference is twin or single tips. I got my last exhaust off of the usual scumbags. Think it was 80 quid for twins. Didn't come with any mounting hardware though, so remember to grab some because odds are the u-clamp will be goosed. I changed all of my rubber hangers at the same time too because I couldn't be arsed to fight them and cut them all off.