Originally Posted by DPE

Well, the dealership just made this an easy decision by selling the car to someone else . So be it. This is some good info, and may apply once again if I find another car at the right price with the wrong gear. I suspect I'll just shop until I find one with a 3.73 though. Also, I've never found this 'officially' in one thread anywhere on the net (though it may well be out there), so I'll share it here. For the 2010 cars (and I'm pretty sure the 2005-2009 cars), rear axle codes are as follows for GTs. As noted above, all GTs are limited slip.

CG = 3.31
CD = 3.55
CB = 3.73

The 2011 cars use different codes. Pretty sure BB is a 3.73, but otherwise I don't know. Not shopping for a 2011 .

Thanks again for the responses.

Phil