Actually, between Rockauto.com, eBay, Craigslist, Facebook Chevelle sites, Ecklers, OPGI and a number of old car parts sites I am doing pretty good sourcing and installing parts.
However...
I have not found the exact connectors or wiring from the ac controller through the firewall. I did pick up a compete ac dash but the controller is missing a part and he didn't have the connectors or wiring either. Maybe someone has this wiring harness or knows who might stock it as I have been looking for weeks now. It goes through that mid-size hole just to the left of center.