A few years back I did the conversion on the 100hp '67. It's posted here somewhere if you can go back a few years. I did get a lot of help from Bruce and Ed. If I remember right you need to get a distributor to convert to the point/condenser setup. I found one on ebay for cheap. I'll see if I can dig up the old postings. Don't give up.
Here's an ebay link. Prices started going up I see. You'll have to remove the spaces after // and com to make the link work. Searched 1966 Evinrude distributor.
https:// www.ebay.com /itm/0305446-0580621-1966-Johnson-Evinrude-Seahorse-80-hp-Distributor-Group-Parts/161100562714?epid=867497098&hash=item258257811a:g:e5YAAOxyDoZSJ1f2:rk:1:pf:0


Here's some help, not much
fiberglassics.com/forum/search.html?query=golden%20meteor%20distributor&searchuser=63%20sabre&searchdate=all&searchatdate=10/09/2018&childforums=1&catids=18&limit=20