If you have either the proper C body, B body stsgion wAgon axles or truck axles, send them to Moser with a note stating you want them Shortened and resplined to stock A body length. They will take it from there. I've had at least 6 done this way over the years.
If you don't need them right away, I will have the ones under my 65 Dart out in a month or so.