Keep the LOM carb and swap to a Ford DS1 distributor that triggers either a GM HEI (standard 4-pin), a Ford DS box, an MSD, or just about any other electronic box. Just plug the carb's LOM port and run the distributor vacuum to the manifold.
That's what I had, but not quite so. I just plugged the LOM port before, and ran manifold unported vac.
Ported vac gives a reference point to the tune. I have about 15* initial advance. I modded the advance arm to limit full advance, in order to increase initial safely, on 87 octane unleaded pump gas.