The spindles, hubs, rotors, brake caliper brackets, and brake calipers are all swappable between 76 to 79 Broncos/F150s.
The knuckles swap between 71 to 79 Dana 44s.
The spindles do not swap between disc brake and drum brake knuckles.
The ball joints are the same part number between all Ford Dana 44’s from 71 to 79. And quite a few others as well, but not universally every Dana 44 out there.