You have one hell of a little task ahead. I never have enjoyed control arm bushings. A whole lot of cussing is what I did. If you have access to a co2 fire ext you can stick them in a coffee can and open up the fire ext. That will freeze the bushings. A welder showed that to me while I was a tank mech in the Army. We did it to put bearings in road wheels on M88 Rec vehicles. Don't inhale the gases though. Good luck and have fun!!