If you are getting the Pertronox Ignitor II module, then it would make sense to get the Pertronix coil designed for it #45011.
http://www.pertronix.com/prod/ig/flame/coils/45000_volt.aspx
No ballast resistor is need with the Pertronix coil. See this other posting.
http://pantera.infopop.cc/eve/forums/a/tpc/f/7890077274/m/6220059645
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