I ran across this in the archives and bring this up since I just found out about it. Advance Adapters has an adapter to put a dodge NV4500 up to a standard chevy SM465 bellhousing for just over $200. For stovebolters, we can mill the bellhousing out to 5.125 inch index hole, get the adapter and bore out the pilot bushing for the input shaft tip and use our 10 spline clutch.
Chris