can u put a fourth gen third member in a third gen housing,same ring gear size

 

I just asked that a week ago. As lond as they are both 10 bolts then you can. However you will need the 90 - 92 third gen 10 bolt 28 spline axles. Also the whole rear will need to be checked for lash and proper contact pattern. This is normally best left for a pro. Bearings need to be pressed on and off and need an install kit for shims and crush sleeve.