easiest way is to have both dizzys side by side.
I suggest swaping the drive gears over if the electric dizzy is out of a roller cam engine. and if you are using the inductive type dizzy use in conjuction with a XF ignition module. there should be three wires earth and two triggers. Ussually there is a purple and an orange wire. connect both the orange and black wire to earth and the purple to the trigger on the module. I have put a factory ford electric dizzy to my early windsor though I am not sure what year it is it fitted with very little trouble and has vastly improved the performance of the enigine.