Looking through the list, it appears the bulk of the parts are available and when pieced together would run about $675 +/-. Bronco Graveyard might even have a kit that has most of the parts in one place.
But, that is without axle shafts. Axle shaft prices can vary wildly.
So, any idea on the specifications for the axle shafts? I assume they are 19 spline outer and 29 spline inner, but length, spline length, seal locations, seal diameter, etc.... ???
Even with all that, there would be some “machine” work needed on the ford spindle to trim the top bolt hole off and clip the bottom 2 sides so it will fit in the brake drum. That can be done free hand as none of those surfaces are super critical. Or find someone with a mill and become good friends with them.