His first car will be a '64 Dart GT

Thanks everyone. I'm a VW guy but a fan of anything vintage and original, so this is our first domestic. There are remnants of the factory air(compressor bracket, dryer, expansion valve and an odd looking factory hole in the firewall) but missing the heat exchanger and under dash vents and controls. It even has a "cooled by Fridgidair" sticker on the back window. I assume some of this stuff is unavailable or $$$$$. Is it worth it to try and find the missing pieces or just go with a vintage air setup? Again, thanks for all the well wishes.