Patrick, you are going to have him painting the entire ignition system.
YO, 428street, you need a coil resistor if one side of the ignition system grounds to discharge the energy. If you do not have a resistor in series with the coil and the ignition stops on a "firing lobe" with the coil engergized, you will cook the coil in the dielectric it is stored in. If the resistor in "built in" it will state it on the coil.
Rick Parker is right, there was a while where Ford installed three different resistor type connections: bathtub resistor, fused link with resistor and resistor wire.
Just a little added information.
