Weird for them to split it up like that - But yes that will fit and be fine.

FYI though - A GTI's exhaust is 2.25" - If you got your hands on one and removed the middle muffler you'd have a decent sound and the same performance increase (read - very little) as your Borla exhaust.

Someone on here would surely sell their old exhaust cheap as - I know i'll have mine available shortly.