1968 Dart GTS 340

Can you trace with documentation that the engine was born with that car?
Seems odd the tranny is stamped but not the motor. Not sure why the factory would do that.
No I can't, but reason leads one to believe that. 1968 was the year that engine and trans "were" to be stamped with partial vins, my block is casted in June with a September build date, and it does not have an X in the casting standing for a warranty replacement. My block is not the only unstamped early build out there, Dodge's QC was less than perfect and I am 99% confident my cars engine was born with my car. No one can say 100% because there is no vin. Just another Dodge anomaly.