Sticker ideas

So I got the idea that I could make my iPhone faster by putting a bmw badge on the case, but I can't find anything I like that actually fits. The space on the back of the case is 2 1/4" wide by 3".
I really want to get a nice 3d badge that's designed to go on a car, not just a sticker. If I could find a small enough m badge, that would work, or a small roundel.

Here are some other ones I like, but they're too big

http://r.ebay.com/AI85pW
http://r.ebay.com/y6Bkne
http://r.ebay.com/nuKsBy (this on would technically fit but just barely
http://r.ebay.com/ntiCTY

The only thing I've really found at this point are the little m wheel decals which I think are too small, and a m tech shifter logo, which I really like but I don't think it's flat. So can y'all give me some links for something small enough? Thanks.

Edit: hit send a little early. Added the rest.