A few threads down from your question was someone with one that they apparently want to sell. A little newer but as far as I know it will otherwise interchange.

Thank you, Howard. It cost only $175 to buy and in the end $110 and some change to ship. Not bad and sure beat the $3000 quote I had from one shipper!

The NOS tailpipe has arrived! It's taken over a year but a way to get it here at a reasonable coast was finally found using the airline that I use when I come here. Good timing too as I'm leaving tomorrow afternoon.

Special thanks to Jackie Bruner at Max Merritt for her work, determination and persistence, not to mention her patience, on getting this done. It took a drive for her or someone on the staff to get it to the Indianapolis airport, then a two day wait on this end with it sitting in the freight department in Seattle but at last it departed today and arrived here not too long after.

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Most of the gauges such as the one you showed are designed to run on 12v so it might be necessary to connect it to a separate 12v battery for its power.

Yes, my 1956 Clipper Custom has it and until I saw mentioned of it on this site a couple years ago I thought it was some odd owner add-on! It certainly looks unprofessional.

Not only no Ultramatic but no power brakes either!

From what I gather, any unused POR must be discarded after it's been applied but the remainder of the Hirsch product can be used again. Maybe propaganda but that's what it said, paraphrased here, in the Hirsch literature for their product.

As an outline (mainly for my own reference) these are the sources of the various pieces for the main transmission body.

Main housing: Original
Input shaft: Replacement
Cluster gear: Replacement
Main gear assembly with adapter: Replacement
Syncro ring and gear: Original
Syncros themselves: Replacment
Syncro detent plungers and retainers: Replacement
Main shaft roller bearings: Original

Not sure yet:
Cluster gear thrust bearings
Cluster gear pin bearings

Did a bit more tedious cleaning of gear teeth but over all, they don't look bad. I also did a dry run of fitting pieces together and see that one of the little spring plungers for the syncro assembly has a tiny burr in the hole that will have to be removed in order to get the plunger to go in and move freely. I don't have a Dremel here but maybe my brother does so I'll check tomorrow.

On the pin bearings for the cluster gear, it turns out that the 48 good ones are .1243" diameter while those from the replacement transmission are .1246-.1247 and one never wants to mix sizes. Some of the larger ones are also bad so can't use them all as a set either. Mixing the a couple larger in with the smaller, the larger ones would take the load and it wouldn't rotate smoothly. Actually, it would probably not be noticeable but could stress the larger ones and cause breakage or maybe even keep them from rotating as they should.

Needed a break so I did a little more cleaning on the outside of the gas tank while it's still outdoors and doubt it will need any more sealer. It has had three applications already including the initial one done back in July when I was last here and may even be a little thicker than it should be so I will be surprised if it leaks at all! Some came out of the whistle this time so I don't know whether it still works or not.

I nearly forgot to mention the two small compression springs in the second photo. They were inside the original transmission but clearly do not belong to it! The more I think of it, I seem to recall that years (decades) ago it was sitting open in my old garage and I accidentally tipped over a box if miscellaneous bits and pieces so some apparently got inside.

EDIT: Ross is sending me a couple of the .1243" diameter pin bearings so it should be good to go when I'm here next but I'll have to buy or make the special tool for installing them. I've done without but not easy or recommended!

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I didn't know that any had a strip at the tops of the doors and the artist concepts from the brochure, while it shows them, doesn't necessarily mean they were there! Of course, Ross has seen many more of this model than I have so I'll defer to his expertise.