66 A Body complete AC unit

If converting to factory AC, keep in mind the firewalls are different for attaching both the heater and AC underdash units. The firewall cutout area for the blower motor area is larger on the factory AC. I am converting my wagon to factory AC and decided to add the AC firewall to Make my life easier (keeps both of us happier!). If you go with the knee-knocker style, much less work. PM a friend of mine FWDLK Frank who has at least 2 complete set-ups.