It's an air flow"recirculating" Heater. I just don't like the thought of the wire position on that blower motor.The motor from advanced auto turns clock wise,the motor he needs turns counter clock wise.I don't know if you reverse the wires on the advanced auto motor,if it turns counter clockwise.The blower motor from classic,you don't have to look at the wires on the firewall side.

Tim

1951 3100 Chevrolet
1951 Chevrolet Suburban Carryall
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