@SM3570, I did look for a build sheet, and did remove carpet, rear seat and door panels for a "look-see". None, but I wasn't surprised, since the prior owner had some interior work done. As far as the "codes," they are still on the underlying build tag, ie: the "G" Code Boss 302, "5" toploader, as well as the metal tags on the 9 inch "N" case, with Daytona pinion support.
There's a heck of a lot more to this story. I actually have 6 different Emminger sheets for this car, all different, and at least 3 different VIN's, all ending in "100053." If you saw that link I posted earlier to Emminger's notes on the first 100 Mustangs for 1971, you will see my number is circled with a note. At one point, Ford invoiced the car as 1F05R100053 (the earliest Boss 351.) But on it's birthday, it was built and tagged as 1F02G100053 (Boss 302)
The Mustang Monthly story is online, just Google "lost boss mustang" and it comes right up, including photos. The one thing that Donald Farr was unable to successfully photograph was the "OSS 3" lettering that still faintly shows under the Grabber Yellow as painted-over on the rear decklid. We speculate that the "02" lettering was painted over with a "51" when the car was later photographed as the new Boss 351. Here's a Ford publicity photo. Look at the trunk lettering and honeycomb and flip down gas cap, all still on the car today:
@73VERTPROJECT: I don't know what it's worth. If I decide to sell it, I will probably put it up for bids, with a healthy reserve. I have been giving it some thought lately. I have also wondered if Ford has any interest in buying it, since they keep publishing those old photos, as recently as 2006 and 2007 in the Official Ford Dealer Calendars (which I did like seeing!) So, they obviously see it as a milestone car. I know I do !!! It's really the last production Boss 302 ever built by Ford for 40 years.