I replaced mine last year with E/S poly bushings, so maybe of some help.
Its abit of a time consuming job, if your up for it. The balljoint press should work, as I used a big C clamp in the same manner. Drill big holes (3/8") all around the rubber, then pressed out the remaining rubber and centre pin. The outer shell is factory flared on one side and that was maybe the hardest to remove. I used a chisel to open up the flare, then drove it out. It was a b!tch to do. Then used the C clamp to press in the new parts.
I think, could be wrong, but some replacement rubber bushings can be pressed into the factory outer shell. If so, then alot of time can be saved. I did require 2 floor jacks to support the axles and a big bar to seperate and pull the axle end down and away from the other axle.
Hope this info is of help.
Bill M.