The 2011 Porsche 911 GT3 RSR made its international debut on Dec. 11th at the Porsche R&D center in Weissach, Germany. The 4.0 liter, six-cylinder boxer engine has a new engine-management system, modified air-intake housing and redesigned exhaust system. The engine creates 455hp, 5hp more than its predecessor and 450 Lb-Ft of torque.

The 911 GT3 RSR also includes aero modifications, including a new front lip to increase down force. The German auto maker increased the size of the front wheels from 11 inches to 12 inches for better grip and less understeer.

The 2011 Porsche 911 GT3 RSR can be yours for approximately $542,500. That's an estimate of course.