In the boxes of parts I acquired with my 1953 Chevy 5-window pickup, there is what looks like a brand new Harrison heater box. Additionally, I have the fan wheel and two defroster ducts that go along with the heater box. I want to point out that while the unit looks new, it does not have the gaskets, fan motor, and heater core, it is just the box.
I have tried to find this part online in order to set a fair price, but it must be made of unobtainium because it was impossible to find. I live in the north Dallas area and prefer a local pickup, but will consider securely packaging and shipping it to you if you pay for the shipping costs.
I'm looking for $300, but will consider a fair offer. Feel free to reach out with questions and/or an offer.
