probably  it is more of a fit  issue  than electrical .. not to many options anyway    jolting the primaries on a OMC coil should create a spark on the plug.

trial and error and if it works great

Pesonnaly I have no wire diagrams or docs  to consider making any further comments .

but if it works  another generation OB will live on.

You would become  Dr. Christiaan Barnard of coil transplants  !

Tubs,
Them Atwater points can’t spark until the points make contact, THE OMC can’t spark until the points open, and yeah them Atwater systems is quick.
I don’t think either can be actually visually seen with the neked eye.