Wait, I missed something, since when is a BMW....ANY BMW...meant for pimping and styling and not speed and the "ultimate driving experience?" Hell I'm trying to do just what Warbucks is doing with some pimping involved as well...granted I'm still in college and don't have that kind of money....and I only have a 4.4 to work off of but still...I'm getting there

If you want to turn the X5 into a modding car, More power to ya!
Warbucks just out of curiosity...if you're looking for raw power why didn't you go for a displacement upgrade from Hamann or Hartge rather than a SC?