Some more bits of information. The engine casting number is 2536430 10. This was pieced together by bits and pieces of pictures taken with the inspection camera. Not sure what the 10 at the end means but it was throwing us off when we thought that they were the last two digits and it didn't match up to any of the number charts.
Finally got to see the casting date, 3-28-67. Since I am practically an expert now, I am going to say that it is not the correct engine for this car since helpful, knowledgeable, people who have been able to put the likely birthday for my car would be March or early April 1968.
Friend of mine pulled a valve cover and confirmed that the heads are 906's, but the valve cover was replaced without noting a production date for the heads. Not that it matters.
I do have another question. Considering that this car was built in L.A. is there an engine date (the one on the pad up front) that would be too close to the cars build date to be legitimate? For example, 3 5 up where it says D440 HP, in a car built 3rd week of March.