Need help with trans decode....

i have a 78 727 trans. is there a way to decode them? if so what will it tell me.
here is the numbers
PY403953460732747 is whats stampede on the pad.

any info would be greatly appreciated.
i am trying to figure out what i need to use this in my 70 sat.

thanks shane

https://board.moparts.org/ubbthreads/show...&PHPSESSID=

thanks wild bill.

shane