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Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
Posts: 16,182
RE: nub dumb question
Ditto on the sticker on the rear cover. Also, it's on the driver's door sill on the Vehicle Certification Label. There's an axle code but I don't know what the codes other than mine are which is "CD" for 3.55, limited slip GT with manual tranny.
Look on the lower right part of the rear end housing, it will be a little white sticker with the Gear Ratio on it. But if you bought the car Used, the rear may have been changed.