You can run any coil you want. You just have to make sure if it needs the external ballast resistor. Stock Ford wiring used a pink resistor wire. Look up a wiring diagram for your vehicle. As stated above, you can even use a different ignition box. The dizzy is just a trigger for the spark. I use the whole system due to price and availability of parts. There may be better systems, but not at the Duraspark price.