I just pulled the differential from my 91 gt. It has the numbers 41*11 1345/02 stamped on the side of the ring. Does anyone know what those numbers stand for? There is also a 25 on the opposite side?
What exactly do you want to know for? The gear size, make, or what? There is metal tag attached to a bolt on the rear cover that gives the stock gear (if it was still there chances are the rear was completely stock and you could go by that coding). Or you could mark a tire and the driveshaft and see how many times the driveshaft spun compared to 1 turn of the wheel.