If it was being run behind a SBC, the input shaft would probably have been shortened to fit the Chevy. Just so you know.
There's a couple of ways to mount an A833 behind a Bowtie, but if it was done in the '70s they probably cut the input- and often turned down the diameter of the nose to fit the GM pilot bushing. You'll have to address that if that's how it was done if you want to run it on a Mopar again.