i have thought about that and seen a few kits on the bay, made for the a3 which could possibly work out cheaper, and easier to fit in the long run, it was just a thought atthe back of mind as it wont be getting done yet but if it was gonna be cheaper than say £150 to source a core and pipes it may have been worth it but like you said custom pipe work is gonna be a pig lol, but thanks all for the info