Bob, I agree with you that the time/money spent with Kevin Marti is well worth it.
I have also learned through this effort that everything is not black & white in terms of documentation. We have seen official CHP paperwork touting
X number of Mustangs on one hand, yet other paperwork indicating a different number of cars. Although I would love to be able to say with 100% certainty that a given number of SSPs were actually built that first year, we just are not to that point (yet).
[it's still fun to try though!]