67 Barracuda Factory Air - Worth Fixing Up?

I am at a crossroad with the factory air in my 67 Barracuda. All that is left of the factory air under the hood are the two ports in the firewall. Inside the car, the push button controls remain along with the vents and coil system under the dash. A/C would be nice especially living in Texas although I am afraid we may be chasing something very difficult to maintain.

The interior of the car has been restored to look as new a reasonably possible with the exception of the under dash vents that will cost around $1000 to restore by the time I pay shipping both ways and have it re-chromed.

So here are some questions I am hoping some members here can help with:

1. Do you still have factory air that works in 67-69 Barracudas?
2. Are there replacement parts for under the dash available if I need to rebuild?
3. Has the system proven to be fairly reliable once rebuilt?
4. Can the original coil inside the dash handle refrigerants available today?
5. Is the pushbutton control system fairly straightforward to work on?
6. Any idea of a ballpark cost to get the air working with nothing under the hood and typical repairs inside the car?
7. Are there companies that specialize in restoring these factory systems on a-bodies?

Sorry in advance for all the questions. I owned a 67 Barracuda many years ago as a teenager without air so am not familiar with the system. There is also a linkage arm hanging down in the last pic that I am not familiar with. Moving on without air is my other option if this proves to big of a beast to tame.

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