Yes but look at prices to mod the M5/M6.
M5 = 4,100
M5 wagon = 4,300
M6 coupe = 3,900
M6 vert = 4,300
Mods:
http://www.evosport.com/
http://www.evosport.com/product/vehicle/guides/BMW_M5M6.pdf
http://www.dinancars.com/shop/index.aspx?series=M-Series
You are talking $6-10k for just basic bolt-on's and ya the car will run over 200mph but it's barely in the mid-high 11's.
I've seen stock CTS-V's run faster and with a few $k in mods a CTS-V is easily mid-10's..