Hmm... to tell you the truth, it sounds like you need to actually research this a bit. I don't think anybody here is gonna spoonfeed you the answers. Maybe look around at some GTI forums, or even check a place like crutchfield.com, they'll tell you what size radio can fit into your ride. Crutchfield can give you step by step on getting your radio panel removed, but it's not free. From there, you'll have to check yourself.