How are upper control arm bushings replaced on 1991 Chevy s-10?

The upper control arms can be fairly easily removed, placed in a vice and disassembled. This is not something you really want to do at home. But as easy as it is if you have the time and tools, the dealer will usually talk you into replacing the entire control arm, especially as old as this one is. The holes the bushings fit into wear as well, and the ball joint on it is probably shot too.