That is correct. But if the axles are beign swapped for open knuckle units, that can be easily taken care of, either by using aftermarket axles (like from Dynatrac) or dare I say it? ) using an axle from a ford F250HD. Other options would be to use the newer trans with an older RH output 'case using an adapter from Advance. This is, of course, asuming that a later 'case is used. If an original 'case is used, or a later divorced style (fords and Mil-Spec Dodges used them into the '70s) than it will be a non-issue.
