Duster blower motor

Ok, I had to tear my dash apart to put a new dash pad on (from classic industries, it's green and awesome!) and now I am fixing things that I knew where broken. The heater blower motor is seized up, and yes I tried to free it up. Thought I would just order a new one, there isn't any. Now what? Anybody got one? I searched for maybe a modification to use another one, nothing there either. I really don't want to put the heater box back in and not replace it. It's a non a/c car, 1970. All the normal places are not showing one for non a/c. Please help.