Good day everyone

I have an old Byron Glasair on a Quadra 35 engine that I'd love to finally get running but I'm having trouble finding a new ignition coil for it.
I've tried B and B a few times and they are out of the coils for good it seems.
This is my first gas RC engine so I'm trying to go as plug-n-play as possible or close to original as it is cheaper and a bit more convenient/less confusing.
While I do recognize that an electronic ignition is an option, it would likely require me to remove the magneto, changing the length of the shaft and sending me on the hunt for more parts. But if anyone has done this conversion and has a build list, that would still be appreciated.