HA! I have known of one still on the pallet from Ford, wrapped in OEM plastic and tagged by Ford as delivered with alloy heads. I have been checking on it since 1976 along with the OEM Boss 9 "S" right next to it on a factory pallet as well. The family won't let them go, but it has been my life mission to eventually get them. Unfortunately, they know what they have and are keeping them for sentimental value.
No, I won't tell you where they are!