To my knowledge there were no RPO or aftermarket AC/Heater combos for 52. There are several options for heater/defroster. Not so much for AC. There are underdash AC setups for the time period. And unless it is a very rare heater/ac setup I don't know of any. I think if you want an original heater/ac unit you might put a post in the swap meet forum. If you find one that is original let me know as if it is out there I would like one as well. And if there is something like that out there I gotta hunch it will command a price well in excess of $800.
