8 3/4 identification help

Wrong about what? He has a 657 carrier which is a early 741. It has a 2 cast on it as do all 742 housing but it is not a 742 it is a early 741.
I misread it the first time. It's a 741 based on casting numbers. But 742 ALSO had a "2" I get it now. It's late lol.