Got to ask the question... why didnt you find this out "before" you bought one?
alright mate - where in Merthyr are your from? I'm from Pentrebach
not sure about how the exhaust would fit but if you want it done properly i suggest you give Charlie down at Pro-Speed Exhausts a bell. he'll get it sitting perfectly in no time for you. Based on City Road in Cardiff (just round the corner from Rileys / Poet's Corner pub)
he'll see you right. mention the forum to him and he'll do you discount aswell