Engine/Trans Decode

Wondering if someone can help me decode my 3970010 block. Pad reads:

12L5743330.....is this

1=Chevrolet (car)
2=72
L=Las Angeles (Final Assembly)
5743330 = sequence number vin

Also on the pad is V0414CMD

V=flint michigan
04=April
14=14th of April
CMD = ?????

This is where I am confused I've seen multiple listings that say codes for car CMD.


How about the transmission..I know it's a Muncie..not sure what kind.

Trans tail = 3846429
Mid Trans = 3851325

thanks for your help.

Brad