Shelby SuperCars Ultimate Aero XT2013 - ...
Model: Ultimate Aero (2006 - ...)
Wikipedia (Ultimate Aero): http://en.wikipedia.org/wiki/SSC_Ultimate_Aero
SSC Ultimate Aero XT - The special edition to celebrate the end of production run of the model. The XT will be built in a limited run of just five examples and will utilize some key assemblies that will feature in the Tuatara, for instance, SSC's proprietary developed 6.9 litre all-aluminum twin-turbo V8 engine unit and several other features to go along with the new engine unit such as enhanced cooling, transmission upgrades as well as a seven-speed paddle-shifted gearbox.
Technical specification (official manufacturer numbers)