Greetings! I have an ID number question!

Is there more than one location on the transmission where one can find its ID number?
(also stamped in the engine compartment VIN plate)

I know the circular port on the top cover has the numbers stamped in the circle, but Im guessing they are duplicated somehere else on the transmission. I dont want to take apart the interior to find the number!

Does any one know?

Do the overdrive units have ID numbers as well?

Thank you!

gregnfc
NYC