I am trying to find out what is in my rear axel in order to make the correct purchase on parts for a lunchbox... Open carrier,or some type of limited already. I called jeep and they told me it was anti spin in rear? And command trac up front? Im still confused as to whats in there. Also are gear ratios always same front and back? I would assume so. 1997 sahara D 44 rear D30 front 3.55 ratio.