Mitsubishi Repair: ball joints, alignment issues, ball joints

Question
is it hard to change lower ball joint on 92 pajaro

Answer
Michael,
If you have the proper tools and experience with what's involved, then it's not a bad job.  It's usually around an hour job per ball joint.  Else, you may want to have a mechanic do this job as you could cause damage to parts of the surrounding steering components and cause alignment issues if done incorrectly.  
Good luck!