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Sgriff144, Standard Magneto sells both the replacement coil for Bendix magnetos and a military dual fire coil that is a perfect replacement for the OEM coils on their Ebay store ! I have used the dual fire coils in a couple of my Oliver 15- 16hp engines, but there’s a trick to insulating them. They have to mount with the two buttons facing up, you will have to ground one button to the mag plate and the other button you have to solder the spark plug wire to !
There are several ways to attach the spark plug wire, cut a slot in one of the buttons with a hacksaw, lay the plug wire in the slot and solder the wire to it. The other way is to make a small brass or copper tab with two holes in it, one hole should be bigger than the other so you can solder it to the button, once soldered attach the plug wire to it ! You will then have to reroute the plug wire down thru the mag plate so it exits in the direction closest to the spark plug !
It doesn’t matter which button you ground and which one you attach the plug wire to. Either way works ! Then you will have to coat the wire connection with epoxy or a rubber boot to insulate it from jumping the spark to the mag plate !
These dual fire coils produce a VERY hot spark and can jump 3/4 to 1″ if not insulated properly ! But they will fire even the dirtiest of plugs ! So good luck, hope this helps ?
Geary