non a/c heater box for 75 duster

I just bought a new heater core for mine. It was 20-25 I think at Advance Auto. There is a heater box up here in NW PA on a salvage car I can get for you easily. Not sure what the guy wants-maybe 20-30? If you are interested-let me know. I know it doesnt have the metal clips- used them for my car. But you can use your old ones and if I can find my extras-can include those. This would be out of a 74 valiant/swinger- same thing as Duster.