1984 ranger 2.8 replacing with a Mustang ll engine looking for helpful hints

[19Walt93]

It's not a good idea to use one of those aftermarket "hot" coils on the duraspark II system either. I would use the correct DSII coil that has those weird pins on the coil, and buy the horseshoe connector for the coil if you are using the DSII system. The GM HEI frees you from this requirement.

I've had a yellow Accel coil with the correct resistance on my Mustang since 1990. The car came to me with an aftermarket module which failed in about 2000. I replaced it with a used Motorcraft module from a car I'd junked out for parts. I finally bought a new Motorcraft module about 2010 when an intermittent hiccup developed. The intermittent coil is under the seat just in case. Duraspark modules are not fragile but they will overheat with low coil resistance.