Click the image above for a full-sized gallery.
Pontiac's 2006 Grand American Rolex Sports Car Series championship-winning GTO.R has been retired. In its place, the G6 GXP.R is set to compete in the 2007 series, where it will rub fenders with the best and brightest from BMW and Porsche.
The tube chassis racer is built to Grand America GT class specs and equipped with an LS2 pushrod V8, making upwards of 450 HP and sending power to the rear wheels. Although the exterior is a dead ringer for the production G6, most of the body panels have been replaced with carbon-fiber pieces.
Expect the GXP.R to make its debut at the Rolex 24 Hours of Daytona later this year.
The full press release is posted after the jump.
For our comprehensive listing of everything from Detroit, click here.
2010 Nissan Cube breaks cover in Japan
Officially Official: 2010 Ford Mustang!
2010 Ford Mustang revealed early on Ford's own website!
2009 Nissan 370Z rolls out early in So. Cal
VIDEO: 2009 Nissan 370Z revealed early in So. Cal.
In the Autoblog Garage: 2009 HUMMER H3T Alpha
In the Autoblog Garage: 2009 Mercedes Benz C63 AMG
In the Autoblog Garage: 2009 Hyundai Genesis
In the Autoblog Garage: 2009 Chevrolet Traverse LT
