The diff is specific to the GTS!!
9.9" and incorporating Torque Vectoring some tricky sh!t in this work of art!!
The engine and trans are also ascue to the rear geometry.
Also the heads up display is great, window controls moved to the door.
Tri-Modul exhaust control, huge stoppers as well!!
Really worth a look but that's about all you'll get test drives are essentially a who you know in the dealership..and if you want a new one be prepared to wait!!...,anywhere up to 6 months

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They shall not grow old as we who are left grow old. Age shall not weary them, nor the years condemn. At the going down of the sun and in the morning, We will remember them ....
And in the end, it's not the years in your life that count. It's the life in your years- Abraham Lincoln