I have an 85 Bronco with a 9", and found a guy who has a couple of spare axles from a 79 model cheap. Will these axles swap from one housing to the other? Same length? Bearing diameter? I know the spline count is the same.
The late build used the same 2 inch flange patteren as the 80+'s
But the switch from taper to sealed bearings was around that time as well.
You would woulnd need to see if he has 3/8 or 1/2 bolts on his flange. If they are the same as yours you should be golden