Si differential

how many splines/teeth does an SI ring gear on diff have? How about a DX? im rebuilding a tranny just dont know what model tranny it is. guy at dealer said there is a big difference between DX and SI output/input shaft seals.

well i counted teeth on diff and there are 68. now would this be a Si or DX? :feedback:

input shaft has 21 splines. DX diff bearings are smaller correct? anyone know what size bearing DX uses. currently have 208 bearing