The Porsche RSR is an exquisite sports car developed solely for track use and priced at an astounding $685,000. The chances of us getting our hands on one are slim to none, but Champion Motorsport is increasing that just a bit by converting this track-only model into a road-going 911 RSR. The best part is that it will only set back prospective buyers a cool $399,900.

Surprisingly, the company managed to keep the project a complete secret until it made its debut in the latest issue of Car and Driver magazine, which calls it "the coolest 911 ever". The Champion Motorsport RSR is based on a 2011 911 Turbo S with some amazing updates. The tuner started by adding a pair of 68 mm VTG turbochargers that have increased the 4.0 liter six-cylinder boxer engine’s output to a total of 640 HP. As a result, the new RSR can sprint from 0 to 60 mph in just 2.7 seconds. Next, the tuner added carbon fiber RSR bodywork, an adjustable Ohlins coilover suspension, and a new set of Champion Motorsport magnesium wheels.[...]