I second the recommendation to send the distributor off to have Micheal at Third Gen ford parts to rebuild it. Also have Skip Haney rebuild your coil. I would not change over to the efire system. I did both of these on my 37 21 stud engine that had a couple of lower compression cylinders like yours and with these two items addressed, it runs surprisingly well. I also replaced the spark plugs and spark plug wires as well as distributor caps
https://thirdgenauto.com/?gclid=CjwK...xoCNikQAvD_BwE
https://skipscoilsandpumps.com/contact-us