So today I received 65mm center cap stickers from ebay. I quite like them. I think I'll stop my search for the time being.
My only complaint, and I knew this when purchasing them, the GTI lettering is simply a separate die cut sticker over top of the black circular sticker, so it may catch fibers from a rag when cleaning them, which could result in the letters pealing. Only cost $13 CAD shipped though, so they are disposible.
Here is a pic.