Decode Help Please?

[73 408 Duster]

Just got two 833 transmissions and was wondering if anyone could help me with decoding the numbers.

Thanks

Maybe you guys can tell me

The cast iron one reads:
I believe it is out of a 72 Duster

2B501136
PP8333986-043
C99129 H

The aluminum one reads:
I believe this one is an OD

6G18394
FP 833-5337

 

[crackedback]

2B one is out of a 72 car.

The other is likely an OD trans from a 76 car.