Dehumidified Defrost needed?

There's always "Studebaker defrosters." I only know of them, because, friend of mine (who still has since the 70's) his WWII MB Jeep, added a Stude defrost unit to it. Simple, square box main heater, and the separate Stude unit Has a coiled/ finned copper tube exchanger mounted on the intake of a small blower motor You just used "T's" in the main heater lines and teed this in

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