Oh my God... -40!
I am sorry that I do not have any specific information regarding a '87 Crown Vic. I'd like to suggest that perhaps an electric heater in the car while he is working in it will make it more comfortable, even an electric hair dryer would help.
Regarding the ductwork. He would not be the first to cut it up and duct tape it back together. Little strips of metal brackets screwed to hold the plastic together and then duct taped to make it more or less air tight is something that may work. I can't imagine -40 degrees!
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BroncoJoe19
2006 Alt Fuel Jeep (electric)
'98 windstar 3.8L
'99 Crown Vic 4.6L
'90 Full Size Bronco 5.0L
I'm not a professional mechanic, take my suggestions with a grain of salt, or a cup of coffee
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