65 ford should've had a resistance wire going to the coil. If it was still in place there wouldn't be any need for a second resistor. Did you measure the voltage(s) going to the coil? With the key on around 6 volt, turn the key to start should be around 12 volts, as long as no one has changed the wiring before you.

A previous poster mentioned pertronix. I would advise the same. Would make your life a whole lot easier and make your ignition system a lot more dependable.