Help ID a833

What is this? Was told it was out of an F body. Looking for an A body to fit in my 73 Duster and don't want to get stuck with some truck or van BS. It is a small block bellhousing and the case is aluminum. Can't tell if that's an iron tailshaft in the pic or not. Thanks for the help guys.

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Looks like a 71-74 B/E-Body shifter location trans with a homemade adapter bracket to make the a-body shifter work....possibly from a truck? Check out the linky below....the more pictures and part numbers you post will help
Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists