I am relatively sure you could bolt on the RH unit to the RE without much ado. Since you won't be using the governor anyway it will be just along for the ride. You can remove the outer governor feed hub with tubes from the O/D case so they aren't in the way. The output speed sensor may be a problem though depending on the configuration as I believe they changed over the years. I can't recall how the RE was set up.
Great. That's exactly what I needed to know. Thanks!
I just wasn't sure if there was something obvious that was going to be in the way or not.
This np205 has the cable driven output, and there's a passthrough electronic adapter to generate the VSS signal available, but, I still need to figure out if that's different than the one on the tailhousing.
Here's a picture of the RE, and the transfer case. The inspection cover to release the OD drum set is the same distance from the main case in both the RE and RH, so those bearings should be interchangeable.