The correct build date is 11/30 per the Marti Report.
That is one day away from my build date (different plant but I would think similar patterns emerge)
Engine assembly date 11/21, block casting 11/14, heads 11/15,16 distributor 11/14. Exhaust manifolds 9 something, timing cover 9 something, fuel pump 9 something. Other notables, all glass either 6 or 7/67, rear end 7/67