Don't know if you guys have seen this one yet but I sure wish they would have added a set of 4.10 gears and tested the car.
Link: http://www.musclemustangfastfords.com/tech/mmfp_0702_ford_shelby_gt500_track_test/index.html
Link: http://www.musclemustangfastfords.com/tech/mmfp_0702_ford_shelby_gt500_track_test/index.html