It was not that bad. One screw to remove the painted headlight cover.
Three screws to hold in the chrome ring that holds the actual bulb. Those were the screws that gave me issues on both sides. After 37 years in place they were really stuck. I just removed the 4 screws that hold the entire frame for the bulb holder, and the entire mechanism came out. I took it to my workbench and put some pressure on the screws and a good new screwdriver to get them to back out. They were pretty beat up after all that so the ones on the driver side were replaced. I did use antisieze on the them when I put them back in. The passenger side screws came out easier. It is possible the driver's side was worked on before I bought the car. I don't often get to blame the previous owner for much after all the years.
The bulbs just plug right in, same three prong connector as the old headlights had. Then do some cleanup, and reassemble.
The four screws that hold the adjustment bucket that hold the headlight had just four identical screws like the photo, even with the lock rings.
The LED bulbs are indeed a direct replacement for the old sealed beams.
Pelican sells them as part number CLWH-SMD6V12VT and they were $375 so not cheap, but indeed simple.