There is a nice tool for opening the ball joints - its a long "double nut" with a pair of bolts, one extending out each end. One bolt is locked in place with a jam nut - and the long nut is held firm and other bolt turned "out" to put pressure between the two pins.
I got my machinist friend to put a dimple in the top of each of the two (3/4 - Grade 5) bolts so they center on top of the ball joint pins - and use lots of "never-seize" so nothing galls. And then....I loaned it to someone, so its not in the box anymore.
To simplify life when removing the spring loads from the A-arm, I use a longer than standard threaded rod with the "factory" lower spring compressor hooks. It extends out the upper shock opening to an anchor that's easy to reach and lubricate. Jacking against the A-arm compresses the spring - the described gadget holds it locked up in place while you take the jack out of the way.
Steve Metzger Tucson, Arizona