SVT is still working on the final design they removed the Shebly badging. In addition it has a higher HP than speculated than its original 450HP its now 475HP (Thats still probley underated knowing SVT). Also they are playing around w/ exhaust systems trying to get the perfect exhaust note. From what I have heard so far, it sounds sick! They are talking about having 2 versions the normal GT-500 and the special edition Shelby GT-500. Shelby also has another Mustang project w/ HP numbers speculated at 550HP.