Recently I was having a discussion with a friend about the early '67s with hand engraved VIN plates. What's the current thought on these? I thought I remembered someone saying all the cars with them seem to have Shelby American finishing dates before 11/1/66. Also, many of the cars from this time period, had their original plates replaced with the later, more commonly found stamped version? Just another quirky feature found on early '67s.