1993 Regal Ball Joint

I have a 1993 Buick Regal Custom sedan with the 3.8L V6 and the passenger side ball joint finally went. The driver's side has been replaced when my father owned the car. After 260,000 kilometers the passenger side ball joint went and now comes the task of replacing it.

I was just looking for some input as to which would be better, using an air chisel or drilling the rivets out (and if drilling would be better what size drill bit?).

Thanks,
Chris