no fire,a bit lost....

Was the engine running after the previous owner converted to electronic ignition? I am assuming it was running after and at some point it took a dump. In order to check your coil, you can put a spark plug and plug wire on the coil, ground the plug (or hold it close to a ground) and put 12v across the coil,(remove other wires from your coil before doing this) as soon as you remove the 12 volts from the coil, it should cause your plug to spark. If you get a good spark, your coil should fire the car, and you need to continue troubleshooting other things.