1.98 Rear End?

No need to get that detailed, about it. There are only certain ratios available. When turning the wheel 2 turns, if the driveshaft turns about 3 3/4 turns, it is a 3.73. If it turns almost 4 turns, it is a 3.91, if a little more then 4 turns, a 4.11, you get the idea.