Hello,
I made a video of my replacement of the upper ball joint, since most videos just talked about changing the whole control arm.
https://www.youtube.com/watch?v=nwg2NIlB_jY
I cant imagine doing it any other way than with a press or banging it with a hammer. If youve got the tools (press and dies) I don`t see any reason not to just change the ball joint instead of the whole thing.
Enjoy