I need to install a/c and heat in the 46 I'm working on.

Thinking about Vintage Air. Anyone have any ideas or suggestions? Tell me about systems that you have installed or are familiar with.
Also installing power windows. Really got my eye on the "NeW" set from EZwiring. I do plan on using thier 21 circuit wiring harness.

Anyone ever had any experience with installing power windows in a 30s or 40s Chevy?
Frank