It was a special production car in 2007 or 2008. It was called the red stripe package or edition. Basically for a couple thousand more you got red stripes, black and red seats and the red emblems. As far as I know it was appearance only and anyone could add it to a gt500 so it was not a limited production, but I could be wrong that's just what I remember.
2012 GT500 PP, NAV, SSW exhaust, BMR lowering springs