Is there any way to identify a Traction Loc rear end on an '05 -'06 GT from any stamping or tags on the rear end, or otherwise?

 

All GTs get a posi rear. Traction Loc is just Ford's name for a limited slip differential. They used to hang a metal tag from one of the cover screws that indicated gear ratio, open/posi... Don't know if they do that any more. Just spin one of the wheels while looking at the opposite wheel. If it rotates in the same direction it's posi; opposite direction is open.

 

burnout?

I'm honestly not sure if there are any markings or not.

 

According to the ordering manual issued early for the 2006 model year, Traction Loc was to be an option on 2006 GT Automatic Convertibles, that's why I am looking for a way to perform a visual inspection.

 

Pretty certain that ALL GT's get the Traction Lock diff. but if you are not certain, either jack the car up and spin the tires by hand with the car in neutral like the post above said or try doing a burn out!!! I really think that that was a typo in the order form.