Steering gear box 74 Dart Swinger

Hey guys,
I have been trying to get a new or remanufactured steering gear box for my 74 Swinger. I ordered one from Buy Auto Parts .com they sent the wrong one. I called them and AGAIN they sent me the exact same one! The black one is the one they keep sending me the Silver gray one is what I need.... Can anyone shed any light on this or where I can find a PS gear box??? I cant seem to find one and I don't want Cardone