The panhard bar is the one @ the top of the rear diff?
No, the panhard is what keeps the axle located side to side. It should be the horizontal/diagonal rod that goes across the top and just to the rear of the axle and to the frame. Not to be confused with the swaybar which is the one with the bends in it. The panhard doesn't count as a "link " on the suspension either, since four links have them too, plus their four links.