Jerry Luck found the original engine for this car and searched to reunite it with the car. It used to be owned by Kevin.
http://www.proteam-corvette.com/cars/NSN-DM67.htm
Typical '67 big block stamping should read like this, TO613JC 7121526 (from my car)
In '67, they did not have an "S" in the VIN portion. They used smaller VIN numbers starting in '68 and included "S" in the VIN portion. Lots of questions on this stamping from the little I can see.