Actually there are no special tools needed but, when breaking apart the upper control arm, sometimes it won't come apart with a rubber mallet. The solution is to use two ball peen hammers. Put one hammer up against one of the flat sides adjacent to the spindle/control arm knuckle, then hit the other side with the other hammer as you, or someone else, applies pressure to the control arm in the direction you want it to separate. Did I confuse you? It's a little difficult to explain but it works for the stubborn separation. E-mail me if you want to talk on the phone about it. This is the tip that saved me big time. Good luck. R/S Dennis