I thought I'd update you all on my spoiler saga. I found a place that for it, but the sales rep who is also a BMW fanatic, literally would not install it into my M3. He said you can buy it here, but I can't put it on because I know it won't look right and you won't like it. I was impressed, because he was an honest sales guy.
That's when I realized, I probably shouldn't put one on. So he sold me on a GPS system by Cobra which is really nice and allows you to plug into the lighter, instead of having to install one. Looks really great in the interior and mounts to the windshield. The best part is its removable, so my wife can use it to, yhea right!
Thanks for the advice and preventing me from putting on a potentially bad accessory for my M3. I'm looking into some Ro Ja rims in the spring and that's all Im doing cosmetically to the car, its really perfect the way it is.