I have had plenty of Autolite parts used for different Mopar applications, but those notes were on the packaging, not on the part itself. I'm not surprised that AC made a PCV for a 390, but I am surprised that it had the specific Ford part number on it. That leads me to think that it was purchased from AC by Ford. You are correct though that we don't know if this is factory original. It is a pretty common item to be serviced. Thanks for the feedback.