Exhaust Manifolds

Not an a body but I'm adding "factory" ac to my 85 d150. I bought what I could from a guy on CL about 150 miles away that bought a truck just for its cab to transplant onto another and sold what parts he had left. .
I then went to one of "HemiSS Dart's" (member here) swap meets, and got another pile of D150 ac remnants, got a new compressor from eBay, along with hoses, then I bought heater box rebuild gaskets from DMT, all I'm lacking is a condenser and maybe a little bit of wiring for under the dash.
I discovered some bodywork on my cab that I want to take care of while I have the heater plenum out of the way.... Seems the cowl had a water leak, not that the rock hard factory body putty in the gaps that crumbled and fell out when I touched it had anything to do with that ....