I had to change mine and the upper came pre-pressed with the upper control arm! (got it from NAPA i think) The lower one didnt and was a PITA to get out cause we didnt have the "fancy C-clamp".
I just had a regular heavy duty C-clamp and some different sizes of pipe. It can be done that way its just harder! lol
EDIT: and do get an alignment otherwise it could be way off like mine was! lol