Is there any difference? I've tried our stock bullitt center caps from our '05 on our new wheels. The manufacturer claims stock ones fit, but they aren't tight enough. they seem a few mm smaller than the hole. does anyone know if the OEM center caps from 03-04 are a few mm larger? maybe this is what the wheel manufacturer is referring to. I don't want to spend almost $100 on center caps if they don't fit.