Cant you just use an edis-4 module and early rs2000 pre-pats ecu and loom?? That way youl have fully working ignition

This way You can also get rid of the twin coilpacks and convert to single coilpack (from a fiesta turbo/escort zetec), for reliability purposes. Ive just done this to my engine and its made a diffrence with it not misfiring all the time due to getting rid of the baked wiring and coilpacks.