Well, assuming shaawnlee is correct, Ford went back to straight up timing in 85-86, so as interesting as the question seemed, it has become moot.

Personally I miss the days the computer consisted of a box on the fire wall and you carried an extra just in case. Almost a computerless electronic ignition. I guess that's why I'm trying to relive my childhood with a 77 4x4 crewcab/429 project in the garage.

Thanks for all your input

John