pull the CF's and get a pair of RPI scoops. I want the evosport pulleys as well, but do not want to underdrive other essential components. I am being a wuss, I know. I just do not want any problems down the road. I have had the car for about three weeks or so, but am already itching to mod. Anyone with all three mods have any regrets? Black 2007 M5, about 13K miles.