A833 NP A body trans ID help & intro.

Twister73 said
Boy did I get lucky! The guy I got my trans from chased down the original owner. It came out of a 1968 Dodge Dart GTS-340. So, any guys around here that can give me info on why the id pad is unmarked???

Passenger side, a machined flat area towards the front of the trans, middle-ish or slightly lower than the middle.