I have three Ford fuel sending units. One is C8ZZ-9275-C, one is D0WY-9275-A, and the other is C8ZZ-9275-A. Rather than try to figure out what exactly constitutes 'NOS' I'm just calling them what they are. Made by Ford, never been in a gas tank. Two of them are obviously not NOS, but the C8ZZ-9275-A probably would match any reasonable definition. What you see is what they come with. $200 each plus shipping.
The D0WY-9275-A is sold.