833 or 833OD (identifying)

Got an A833 here that came as a package deal with some cars i bought.

It's a 23 Spline 833 with an Aluminum Tail Housing (A-Body style) that i was told was in a '74 Duster.

The 833 came with a '72 340 & matching ('72) Bellhousing & Cast Crank Flywheel. The transmission is pretty rusty (exterior) and looks to have been repainted a few times so the numbers are kind of hard to read. And it doesn't help that it's currently buried under a mountain of parts in the bed of my '48 Dodge.

On the Right Side of the Main Body/Case :

"H3"
"C87622"

On the Tailshaft Housing :

"ACE-00"
"013364A" "6-77" (casting date? June 1977?)

On the Left Side, on the Side Cover :

"C956622"