The magneto on the Cub/Mate is quite a bit
smaller than the Pal.
I managed to get one of these in a mate but
just barely having to file off some of the
cover. As they don’t make this coil anymore
either its not much of a solution,
https://www.youtube.com/watch?v=esa39Kk7gqo
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.