Removing the control arm bushings is not a fun job. It involves lots of heat. cutting, and hammering. That may be why a shop charges big bucks to replace them. My bushings were rusted to the control arms and did not want to come out. I recently removed mine on my T100 and then had a shop try to press new ones in only to bend the upper control arm slightly. The shop needs several specialized spacers to properly press in the bushings. I wound up buying new upper control arms with the bushings already installed. Check out the post "going back to stock" in the T100 forum for some pics.