Pulled the motor out of my '65 K fastback this week. It was sold to me as a matching numbers car and I had no reason to believe it wasn't, but never did actually check for the VIN stamp. Well, today I cleaned off the area where the stamp should be and there it was... woohoo!
Need to clean the trans next. It's an HEH-T, so it most likely is the original. And for reference to Marv... my car has an 11A scheduled build date.