I am now an old hand, having done three.
I first watched Mr. Shinn's videos (uses a tap to remove). I was not successful with that method as I didn't trust myself to run the tap deep enough. I was worried about cutting the threads too deep into the sides of the bushings.
So, when I ordered parts (Snyder's), I put the dedicated bushing driver on my list. Works perfectly for both removal and installation. As I replaced the original shaft, the old one also works fine for installation. I didn't like pounding on the first one to get the bushings out/in, so I used a large C-Clamp as a press for the rest.
The very last one I did, the new shaft was 0.005" oversize and would not fit. My reamer cuts 0.500", so reaming didn't work. I used the old split dowel and emery cloth in a hand-drill trick to hone the bushings to size.