Early seventies 4 speed ID

I acquired a 4 speed today from An old friend, he had a 72 Challenger with a 340 4 speed(no idea if any of it was original). He bought it 30 years ago from a wrecker in KC. I will post the numbers and I would appreciate any help with the ID. I know I could look it up but I am sure at least someone here likes investigating mysteries as much as I do. Ps it looks like it has brand new 2nd and 3rd gears and all new synchros.

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Author: Doc Corey