Replacement heater motor

[Ronbo]

Hi everybody. My first thread. I'am completely rebuilding the deluxe heater for my 1956 1/2 ton. I would like to replace the heater motor. I think I read somewhere that one off a Pontiac Fiero would work? I know something that has air-conditioning has a higher output so that would be nice. Also I know the direction it is turning must be right. My question is does anyone have any good ideas what should cross referenced to be used or what someone found out that worked? Great site. You guys got a lot of good information.