If you’ve been eying spy shots from the ‘Ring, odds are you’ve laid eyes on this particular beastie. Rumors dusting up from the Bimmer-centric out there have called the thing a CSL successor, but that’s turned out to be wrong. Evidently, the serious M3 is a street-going version of the GT4 racer that’s been putting a hurt on the competition all over the world. The specs are tasty – 400 horsepower from a naturally aspirated V8, 7-speed dual-clutch transmission, six-pot Brembo stoppers and a weight savings of 220 lbs over the stock M3. Sounds good to us. The only downside is the car probably won’t show up in the states. [Source: BimmerFile]