I have restored a few late 60's USDM vehicles from shells to show cars. It is the soft parts and things that you touch on a regular basis (handles, bolsters, buttons) that are just extremely difficult to reproduce. It might be with 3D printing to duplicate small soft part molds, I don't know. We may have to wait for a post-scarcity world.
Weather stripping is the most difficult, and the NSX has some insanely complicated stripping that will make the $1400 new price seem like they are free if those parts go NLA. This car NOT USABLE without them, it would cost tens of thousands of dollars to recreate them faithfully.
Next are engine and transmission seals. Some of the seals (valve covers, oil pedestal, input shaft?) are NSX specific. They are being reproduced, but they are also on CloseOut on RockAuto, this does not inspire confidence. Gates doesn't plan on restocking the NSX timing belt. The bearings can probably be sourced, but the I haven't looked at the throw out/release bearing.
Handles are the next thing to go, SOS has the interior ones, but the exterior ones will be next along with the latching mechanism. A failed interior latch is a disaster too, the entire door panel card gets ripped out in situ and the door shell gets butchered.
Body parts can be fabricated it will just be expensive. Glass can be done too, but it will be expensive and unlikely to fit like OEM.
I'm not sure what to do. I redid a 1965 Mustang in the late '80s and it was heck trying to get all the parts, I redid another one about five years ago and it was simple and cost half as much as nearly everything was reproduced. This was due to painstaking research and recovery of the OEMs for Ford and a surviving population of several hundred thousand units. Even then a lot of fastback parts NOT reproduced because of the extreme cost and small population (~30,000 units).
The big issue I see is that we don't know the Honda suppliers and they tend not to deal with the public when we do. We cannot get support from Alpine or Nippon Seiki. Heck, it would be nice if the OEM of the service mat or car cover showed up and started making some more, they would make a small fortune.
A decade ago Hrant and I had a small run of Ivory and Camel floor mats reproduced, each set cost me about $200/pr and I was able to sell a few at $150. I gave up and swapped out my entire Ivory interior for a black one. Black is easy to deal with.
The retail cost of nearly any part will seem like a deal when it goes NLA.
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