It would make a big difference when it comes to steering response and sway side to side not to mention rattles. If the bushings are almost completely gone, this might work on your benefit. Lift the jeep on it's frame and leave the tires on. Remove the nut that secures the bolt of the leafspring bushing that you are working on. As you raise the jeep at the frame, watch the leafspring bolt. When the pressure is off the bolt, pull it out and raise the frame some more to where you have enough room to work on it. DON'T FORGET to support the frame with jackstands for your safety. Punch out the center bolt sleeve out, slide a hacksaw blade in the middle and then attach the handle and cut the outer bushing sleeve. Do this on both sides of the diameter of the bushing if you have a difficult time getting the old one out. Replace them with the urethane bushings and your done.