70 Dart 340 Restoration Info Help Please

The D32 code on the bottom left is the code for a 727 transmission. The E55 code beside it is the code for a 340. If your car does have a 904 in it now, it’s not what the car came with from the factory.

OK Thanks. Guess I go in the hunt for a date coded 727. If anyone knows of a good source that would be great. Thank you!