Replacing upper and lower ball joints

['65 chevy lover]

While I'm doing the front brakes on my '65 chevy truck, I'm going to replace the upper and lower ball joints. The rubber on both is split. It appears the upper joint is held in with rivets. I figured I would grind them off flush with the top of the joint and then, drive the rest of it thru. Not shure how the lower ball joint is secured. Is it a press only fit? I don't see a retaining clip any where. Any advice or tips would be greatly appreciated. Did a search on the site and didn't really see much. Thanks in advance.

edit: I checked you tube and there were videos but, for some reason they wouldn't play

Spanky