Complete Heater and/or AC needed

[Earlybird]

I recently became a member of this site. Bought a '70 K10 from NC and Texas. The previous owner decided they didn't need heat or AC so everything is gone from the truck, no heater box, no controls, no ducts, nothing. I can find most of the parts for the heater, but not the actual box. I'm wondering if there is anybody out there with any information on where to find the box or the complete heater unit. I can probably do without AC as I'm in Wisconsin. I would even use an aftermarket heater. BTW the truck appears to have been an original big block, which I believe was a 396, but now it has a 454. Thanks.