If you don't have a resistor, that is probably the cause of you burning up your points. The Pertronix can be installed with or without a resistor but you need to measure your coils primary resistance first. Eight cylinder engines require a minimum of 1.5 ohms of primary resistance. Do not remove resistors if the coil primary resistance is less than 1.5 ohms.
If your Ignition coil has the recommended primary resistance, remove or bypass all external resistors.
If you have the recommended Flamethrower coil you should be good here.
Also be advised if you have the standard Pertronix it and the coil can be burned up by leaving the ignition switch on (motor not running). The Pertronix II doesn't have that problem.
I believe you can use standard core plug wires for the Ignitor. You need suppression (resistive) core for the Ignitor II.