I suspect the turbo POS motor that will be in coming M3 would not be able to survive a race, let alone be competitive. BMW is an eco-freindly brand now meaning, they will submit to the pressure of government CAFE regulation. When you do this there you create engines that are anything but, race worthy.
Toy: 2008 Silver Z4MC 300WHP/241TQ
Mods: OEM Euro Headers, RPI Scoop
Daily: 2010 Tacoma Double Cab