After enjoying reading your website for years, I think we come from the same place/motivation--we see isolated facts and try to put them together in some sort of history.
Often we are impeded by auto company executives who, for some reason or another, have concocted a story that they like about the evoution of a car and don't want the real story known (maybe they have burned bridges with the supplier, etc.). This is similar to chronicling miitary campaigns where the historian writing the after action report isn't told about the ammo that was sent to the wrong place, botched communications, etc. Thus the "first Mustang" story, Ford
PR concocted one up and hates to admit that the story might have been bogus when as you say on your website, several pre-production Mustangs were sent to Europe for prep. as rally cars. that was in 1964!
As an observer of the car world for over 4 decades, I have unanswered questions about every brand of car, not just Ford-engined ones, but often only get them answered when I run across one of the famous people involved at some place like the Monterey Historic or Pebble Beach.
Another Ford question for instance is the Mach 2 mid engined show car.
(289, ZF transaxle). I one time saw a picture of a racing model and heard the name Alan Moffett in connection with it. I am curious to know how far along the development of a race car went, who was behind it and why it was stopped?
Also I would like to know if it still exists. It was a drivable car in show form and was loaned to a Motor Trend editor who drove it around Detroit and wrote about it in the magazine.
Lately because of Mike Lamm's stories on Vince Gardner, I'd like to read more about him to find out who at Ford supported his two seater Mustang coupe project. Mike Lamm is a historian who dwells 99% on historical aspects, though he recently published a new book on the present Pontiac Solstice. He was my boss at Motor Trend 42 years ago where he one time nixed the offer of a 427 Cobra test car. (Mike, I'm still mad!)