YES, it can be done, still in the truck. Take one side at a time. Put rear end on jackstands. Remove the bolt/nut, and pull the trailing arm downward. Drill thru the rubber in several areas, careful not to score the inside of the metal "shell", until the metal bushing in the center is loose enuf to drive out. Once that is accomplished the remainder of the rubber can be removed from the "shell" that remains in the trailing arm very easily. The new bushings use the existing shell, no need to remove them from the trailing arm. Lubricate the exterior surface of the new bushings with the silicone grease supplied with them, then pop the new bushings (rubber or polyurethane) in the freezer for a few hours, this will shrink them. Just before you install them, WARM (do not heat) the shells with a propane torch, or heat gun. This will expand them slightly. Working quickly, the new bushing will slide into place easily. You'll need a floor or bottle jack to raise the trailing arm back into position and hold it there til you can get the bolt back in, that was the trickiest part of the operation for me. Torque the nut to 125-165 ft lbs. and you're done. Took me three hours to do the first one, twenty five minutes to the second one. Good luck with it
