I replaced the points in a G80 Matchless with a Boyer over 15 years ago. It's still running with no maintenance. It turned the bike from a PITA to start into a one or two kicker every time. But, to be fair, the points system did not include a battery, which was necessary for the Boyer.
It was a simple conversion that probably took a half hour, maybe. It would be quite easy to convert back, but I sure wouldn't do it.
Bare