Mate you didn't read. My current unit is factory.
the unit you posted is NOT, made by ford, nor is it the CORRECT unit if you want original.
i actually do know EXACTLY what i am talking about and i know you have a stock ford distributor, but again, you seem to know best.
also . . like i previously said, you do not "need" it, your car will run perfectly fine without it.
THIS is the orig style vac can for your car but the nipple fitting is incorrect.
this is how it would look on the car with the FACTORY metal line going to it.