The bottom of your bumper is exactly the same shape as a gti except it doesn't have the fixing points for the splitter to fit onto it. Your better off just buying the proper gti splitter and lower valance as they will slot together perfectly. I would have done this only I had my lower valance colour coded a few months before I stuck the splitter on so I just bonded and screwed the splitter to the valance,it's solid, but if had a choice again i'd just buy both the gti valance and splitter,they ain't that expensive.