Call me crazy, but not knowing what my car had originally - and knowing how Ford probably worked - I paid a few large bills $$$ for a complete original "C" pulley, fan, and spacer a few years back. My car is a Dearborn mid-April '65 K code and like Bob says - we don't know exactly when things happened. I decided to err on the side of Ford using up the old stuff first and the April 1st date being a target rather than a firm cutoff.
It is important to get all 3 pieces, but any good alternator shop may be able to take care of you on a fan and spacer to make the repop pulley work. Might not look 100% original but they should be able to make it work.
Nice to see the repop, but the lack of fan and spacer is disappointing since they really do need to be a set. Maybe Scott Drake can comment on or fix this - they may have everything you need - just not all in one package.