'70 Dart Swinger part needed..

I'm trying to help a buddy of mine at work who doesn't have a computer. Trying to find the A/C control unit for a 1970 Dart Swinger (318ci, I think). Did the eBay thing, only got one hit. Google takes me to countless pages, mostly consisting of newer models.

Just trying my luck here with knowledgable MOPAR people. If anybody can point me in the right direction, it will be greatly appreciated.