slant 6 no start issues

ok im trying to get my 64 valiant to start picked up the car a year ago after it had been sitting since 1981. So far ive gone through the intire cooling system and also dropped the tank got fresh gas in it put on a clear fuel filter so i know its getting gas changed out the starter so it cranks good good battery with a charger. changed the cap rotor and wires checked the plugs ive filed the points but still no spark im stumped? could the coil just go bad? all the wires seem decent followed them all over the engine bay checking for a short/bare wires