@YFaruqi, you can also figure out the ratio without opening up the differential. Jack up only one of the rear wheels and put the transmission in neutral with parking brake off (make sure the vehicle can't roll). Now put a chalk mark on the rear drive shaft and spin the lifted wheel one complete revolution and observe how many revolutions the driveshaft makes. Divide the number of driveshaft revolutions by two for the ratio. For example:
3.7 = 7.4 driveshaft revolutions/2
4.1 = 8.2 driveshaft revolutions/2
