I'm all over this. You'd think there would be some cheap, adaptable tech out there to make a simple module. The available new units I've found are $190.00 and up. Ferret and Gunson are two manufacturers.
Yes, I use 12° BTDC.
If you reread my first post it will answer your questions except how many teeth are you your flywheel. Obviously you can answer that question easier than I can.