We all need to somehow find a way to decide what will and wont fit on the USDM Si's. The front and rear CTR lips haven't been proven to fit or not fit. We don't know if the wing will fit. We don't know about the Japanese aftermarket stuff fitting, like Mugen. It seems like a lot of us are wanting to invest in body kits, but no one has yet because of the worries. I really don't know how to solve this problem. Maybe people should use their connections to dealers and part producers as much as possible so we can start to sort this out. I want that damn CTR kit.