The power side of the ratio has also gone up in the M3 CSL's 3.2-liter inline-6 from 360 horsepower to 391. Couple those mods with a freer flowing exhaust, BBS wheels on Yokohama rubber, Bilstein shocks and the brakes from - you guessed it - the Porsche GT3. The result: a Nurburgring
lap time of 7 miunutes, 43 seconds, making it faster than an Audi R8 V10, or more pertinently, faster than the M3 GTS that essentially succeeded the CSL. All that performance doesn't come cheap, though. Reil quotes the conversion price at €130,000.