Yo mac,
Welcome!
Some info from other Bronco owners..
Duraspark 2 would be a good swap if you are removing the EEC3 stuff.
The EEC-III computer controlled Bronco had a variable venturi carburetor, no EFI. It used a regular flat tappet cam, 351W or 302 non ** firing order, no problems using it with a non-feedback carb.
Hopefully, others will add more info soon.