Originally posted by Knockside: I say find a 518i badge!
And beneath this badge put one of the stickers that you can find at Halfords that says "turbo"
While you are doing that you may as well add type R sticker . But seriously i've never known some one as promiscuous as you when it comes to cars. Even the rich guys i know will keep their expensive cars for at least 1 year. Still i wish i was in your shoes mate.