rear end info

ok guys hers 1 for u. '85 chevy s10, 119 (1.9), 4 spd manual truck with the factory open (one spin wonder) rear end. Im lookin at a few positrac carriers. question is, would any1 know off hand what the gear ratio of the open carrier is and the size of the ring gear without actually removing the diff? (i know removing it would be the easiest way, but im lazy in this instance, plus i dont have an extra diff gasket and fluid)