you can do the upper arm bushings with an air hammer, the upper balljoint comes out after you grind out the factory rivets, and you need a press of some sort for the lower bushings and balljoints.
i have one of those big C clamp balljoint tools that i picked up for $20 at a garage sale. it came with a bunch of spacers to do various jobs, but i've had to make some of my own out of chunks of pipe and steel...
clamp it in a bench vice and it's easier to work with than if you just have it flopping around. you have to be careful to apply the pressure in the right places so you don't wreck the arm. using an impact wrench to tighten the clamp is easier than manhandling a breaker bar, but you gotta be careful...
this same tool comes in handy for doing other things like u joints in the driveshaft, too..
