What year is yours? Specs changed from year to year and used to be listed that way in the old Chilton's books. Don't have mine available at the moment (lost in one of the miles of piles in aisles) but if someone here has theirs, they should be able to find it.
You have power steering? You can get away with more positive caster than manual steering. Later full-size Broncos were in the neighborhood of 6° while EB's were more in the +2-4° range.
You'll probably want 7° C-bushings and still may not be near your target, depending upon year of Bronco and what mods have been done.
Camber is expected to be in the .5 to 1.25 degree (edit) positive area if I remember, but tires wear better with less. I like something between 0 and .5 (edit) positive.
Toe in I forget, but hard to go wrong with 1/8 inch or so. What size tires?
