its an after market one, supersprint, and ive heard that all of the after market manufacturers make them to fit on easily, however, i have heard that the 20 Valve, and the 20VT's have different systems, or require different parts for the systems! i have a supersprint from cat back already. Hope that has helped you in some way, if not, i dont know what else to say??
I don't know Smoo I'm sorry. I would have thought it would fit but with the N/A and turbo models having different requirements out of the exhaust it may well be different. You could just buy it and make it fit, that's what I did with mine, however there was a certain amount of bodging to be done