I want to change the upper front ball joint on a toyota celica VI gt four.?

It's a 1992 model.I just wanted to know if the upper front ball joint needs to be hydraulically pressed out because I can't see any other way of it coming out.Any help would be much appreciated.
I want to change the upper front ball joint on a toyota celica VI gt four.?
change the whole arm -call a parts store.

what is the difference between

xp