Looking into if a changeover date can be determined.
I have documentation of a Boltflex on an early '65 (date unknown but convertible top frame had eccentric adjustment of Bow #2 and the pinned, not threaded latch attachment truss head bolt, which would indicate a date prior to Nov 8 '65 for the top to be built, installation on the line probably lagged this by a few weeks to use up backlog ) and a Vinylite from a '66 (August 66 date)
Can anyone provide more data points?
Or know if they were dependent on assembly plant, and not build date (which I do not believe to be the case as I thought all tops were pre-assembled at Utica and shipped to the plants ready-to-install, but that may be incorrect)