IIRC there were only 489? K code 289 (non-Shelby) Mustangs built in '67. How many of those were spread across each of the three body styles I don't know, but I guess Raven does!
Supposedly the K code sales , which had been good in '66, were hurt in '67 by the new availability of the big block S code in the Mustang, which worked out cheaper than the K code 289 due to the latter being tied in with mandatory 'options' that made it the more expensive.
So you have a limited edition Mustang!