I have a 95 yj 4.0 5 spd and there is a long bolt that runs from the transmission down through the cross member/skid plate. I am assuming it is supposed to have a rubber bushing on the top and bottom, but mine has dry rotted and fell off and all it does is rattle every time you take off from a stop. What is it called and do I really need it? Also on a yj do you really need the panhard bar that goes from the frame to the rearend. I have been told you can do away with it for better flex and ride. Thanks in advance for the help.