[Kurt S]

Sheetmetal dates would be before the trim tag.
The trim tag date was just a week, and not very specific at that. Not unheard of to have drivetrains after the tag date, depending on how close they were running to their suppliers. And it wasn't a FIFO (first in, first out) system, so the last built part could be the first to be used.
VIN was attached after the body left Fisher, a couple of days after the body was started.