What size rear axle came in a 1983 bronco?
full size bronco should be the 9 inch axle, maybe an 8.8 inch
but i think they came out late 80's early 90's. easy to tell the
difference, the 8.8 has bolts in the to remove the rear cover and
has a more square shape to it, the 9 inch has no rear cover, the
front can be removed with the whole third member ( front of rear
axle where drive shaft is, the pinion, and all the gears inside
axle ) and the 9 inch has a very round shape to it. the 9 inch is
the better one to have