8-3/4 or Ford 9 inch???

The cost is about the same really, unless you get an Abody 8 3/4. Both will need to be narrowed, new axles, seals, bearings...etc. Even brakes can be had for relatively the same cost.

Budget wise...Explorer rear discs on the 9" or a 8 3/4 disc kit from Dr Diff....close to the same right??