According to their website they are running 7 days a week @ 24 hours a day. Built on that day, that I can't really answer. Blend & born on could differ, but not by much.
The Mach 1 is not associated with Ford Performance, it is a Ford stand alone. This actually appears in a thread somewhere, where the question was asked.
Yeah it hurts, had the dealer ask me if I wanted to trade my 2008 GT500 early for the 2017 GT350 I ordered, they offered me more on the trade than I paid when I bought it used. Traded in May got GT350 in early August, it was the anticipation that kept me ok, so hold on you will love the Mach 1.