You guys all do have good points. But i have seen a Sr in a B11 that one of my friends had, some of you might know it. It was black and the drive was called pitbull. So it is possible, and will be very fast. Just make sure you do the necessary upgrades though, breaks, stabilization ect. I currently drive a B12 with a silver top, very fast. It's auto though but have a manual brain and harness so it runs like a beotch. 7000rpm to 7500rpm at full throttle.

Anyway i tink it's a good idea. Goodluck with it