sounds like a bad coil. Ask a friend with a toy to borrow a his coil and ignitor to check. Cheapest way.
I have power to the igniter just not coming out. I just ordered an igniter and coil 170 bucks shipped
UPDATE.. new distributor..new coil. new cap new rotor new igniter... cranked up..than just lost spark.. im ready to burn this truck to the ground..someone please help!