There is no such animal. If you want to verify it, take the cover off and count the number of teeth on the ring gear and the pinion. If you are trying to determine the ratio by turning the driveshaft and watching the rear wheel, this method will not work correctly for a non-posi rear.
Advanced Automotive Machine
I posted the answer to your question in your orginal post. You have an open diff and need to rotate the wheels two times while counting how many times the driveshaft turns. Look at the other post. I would guess you have 3.08 ratio.