AMG has been producing racing versions of Mercedes-Benz cars and high performance street machines for over four decades. That tradition continues with the unveiling today in Mexico of a GT3 spec version of the new SLS gullwing coupe. Sales will start this fall and AMG hopes to have the homologation process completed in time for the 2011 race season.

The GT3 SLS will use the same 6.3-liter V8 as the road car, but the FIA will determine its final output for racing. The aerodynamic enhancements are the big news here, with changes to the bodywork evident all over. The front end features a deep carbon fiber splitter that's only bested by the large rear wing out back. The hood sports a large cooling event and there are air intakes for brake cooling in the side skirts and cooling vents in the fenders behind the front wheels as well. Other race-spec features include a smooth underbody, rear diffuser, central-locking wheels and fuel filler pipes in the C-pillar.

Given the racing heritage of the original SL from the 1950s, seeing a gullwing back racing on the track will be the best kind of déjà vu for fans of the three-pointed star. Follow the jump for the official press release from AMG and Mercedes-Benz that includes a few more specifics.
Click here to enlarge

Click here to enlarge

Click here to enlarge

Click here to enlarge

Click here to enlarge