I replaced my PS pump with a new reman plastic pump. I couldn't get rid of the overly annoying whining. Bled it anyway I could find how, and still no result. It drove me to this.
I used the stock pressure line and return line.
I asked for a 1979 T-bird HD replacement PS Pump. Any engine will work.
Yes, they did take the plastic pump. The stock pumps for the Ranger and t-bird are identical. But that's O'Reilly's. I can't say the same for anywhere else. I would think if you were to upgrade from a plastic pump, to the metal saginaw for you "T-bird"(hint hint), they would take it for core. I really don't think most places would care, just as long as they had something to send back.