I found that CDD sells an 'oem' thermostat with gasket for $25, just waiting for it to show up.
Same price as the Motorcraft on Rockauto.
Today, I rigged the blower speed selector switch by taking it apart, cleaning all the contacts, bending forward one of the contact plates that had gotten melty and sunk out of range of the rotating contacts, glueing it back together where i broke a couple crusty tabs. (Ill order a new one to have on the shelf) Then i replaced the blower motor, and blew out the evaporator coil while it was open.
Also, i did the fuel heater delete today. The weep was getting worse and worse, to where it had started to drip onto the valve cover. Pulled the whole head and tapped the hole from the top side 1/2 npt and put a recessed allen head plug in there i think came with the gates water pump. deep cleaned the filter head while it was off and gave it a new filter filled with atf and diesel kleen. New filter cleaned up a bit of smoke.