There is a difference between the two styles of limited slips, the Dana is a clutch pad style ( friction modifier needed) and the AA is a worm gear style ( no modifier needed). Now my old Dana worked real good, but the AA I can bearly feel it going around corners. Also when doing a rear break adjust with the Dana, I rotated one tire and the other tire rotated the same direction like it should. But with the AA when rotating one tire the other one does nothing, works like a standard open diff. Now my VW bug had a Quife limited slip in the trans and it is also a worm gear style but when rotating one tire the other turns the same way like it should. So I am confused, I don't think the AA is messed uped but I can't explane why it acts like a open diff.