Thanks Tim,
Will the P41 module mount to the Farmsaw cylinder? If I remember correctly the mounting bosses are different between the P41 and Farmsaw cylinders.
Certainly not a direct bolt up. The coil will fit but.....
You can see the boss for the module mount is vertical and is one cylinder fin forward compared to the Farmsaw
You can see the lower / rear module boss is one fin back compared to the P41. The area where the P41 coil sits appears to be the same on the Farmsaw but the first 3 fins from the cylinder base will have to be cleared for the coil.
The height of the mounting bosses for the modules is different as well. 3/4" for the Farmsaw and 1/2" on the P41.
With some bracket fab and some hacking and tearing, I think it could work.
I would be more inclined to use the P41 coil and a chip.
Let me know if you need anything else looked at. I'll leave them open for awhile.