I'm glad we seem to have it clarified. I had been wondering about my '07 GT automatic. The label on the door jamb has the code for a limited slip, but the label on the differential does NOT have an "L", which the shop manual says it should if it is a limited slip. Then again, the label depicted in the shop manual doesn't look much like the label on the differential in other respects. This seems to be one of those cases of the people writing the shop manual not knowing what is actually going to be put on the car. It is even more confusing because one of the sales brochures says that the limited slip is standard with the manual transmission, but optional with the automatic transmission.