I have that heater in my Demon, nice for cruising on a cool evening. Takes up way less space then the old factory heater. I have it tied into my dash vents and it has one more vent still going to floor. My mailboxes are removed and holes sealed.
I did this to a B body.Used a A body rear window defroster blower motor mounted under the dash and ran OE defroster tubes to the dash vents. Helped with windshield moisture inside on humid days. Just a thought.
Thanks for the idea. So you just used the blower with no warm water? Years ago I had bypassed a leaky heater core in my truck and drove thru the winter with just the blower motor. As long as I kept the glass free from that slime that seems to grow on it it worked ok. I was in NJ so it was a bit cold that way. But this thing will never be driven during the winter, so I do not think I will really need any heat, just a way to keep the fog off of the glass....I used to use RainX on the inside of the face shield on my bike helmet, worked well at keeping it fog free. Wonder if it would work on the car?