Here’s some info on the factory A/C system in this thread
https://www.trifive.com/threads/1955...ioning.156241/
(Not to be confused with the Chevrolet dealer installed A/C kit that wouldn’t be as extensive as a factory setup as far as equipment and mods to the dash, etc)
It sounds like it was quite a rare option (someone suggests 500 or less) and you have to figure that most of those were likely in loaded 4 door sedans and wagons. One guy talks about needing 8 years to piece together all of the components for a restoration and the projected cost of buying parts then making it functional.
I bet having what looks like a complete system along with the “AC” on the trim tag makes the A/C a +20k add on this Nomad. I wouldn’t be surprised to see the bids hit $60k.