One of my 300CD's is an American, and it HAS a limited slip in it, as well as a host of other goodies, not usually seen, on American versions. Kinda weird car, but definately, NOT a Euro car....Unfortunately. The car is all stock, as delivered which is what makes her so strange...Maybe she was custom spec'ed by the first owner, and ordered with certain options..I don't have any idea though. Any input?