I just replaced the UCA bushings with poly ones. To get the old ones out of the axle mount, I could not pound them out (6 pound sledge and pipe!). I used a piece of gyproc (plaster board, wallboard), folded, to shield the engine and electrics above, then used a propane torch to burn it out until it would push out. If you do this, you must have some sort of shield, since the flame from the bushing and heavy rubber soot are not what you want in the engine. Have a fire extinguisher handy. Don't even think about doing it in the garage- outside!! For the frame end of the UCA, put the torch on the metal sleeve around the bushing (once the arm is out of the jeep) until the rubber melts, then push the rubber bushing out with a piece of pipe. It is a smelly, ugly job, but it works pretty well. The new bushings went in fine after spending the night in the freezer, just a few taps. THE PROBLEM: I could not get the UCA back on, since the axle had rotated the top part forward. I used a a chain around the axle UCA mount, back under the jeep to a high-lift jack, which was chained back to a big hunk of wood jammed behind the back tire. It took mega-force to rotate the mount back into position (yes, this is with the axle hanging free, jeep on stands just behind the UCA body mounts). I might get around to doing the lower control arm bushings this weekend. 4XBob