The real Ford part number is F7LZ-9D634-AA. Retails for around $20 when you could get them. You might be able to find one new, but it's a long shot. Ask a dealer to do a nationwide search. This dealer MIGHT have one, if so it's probably the last one on earth:
Bob Allen Ford
(913) 381-2999
BTW, those number you see molded or printed or stamped on parts are engineering numbers, not part numbers.