A833 NP A body trans ID help & intro.

Passenger side, a machined flat area towards the front of the trans, middle-ish or slightly lower than the middle.
Thanks Rob,
Yep, just like the pic I posted....nada, no #'s. But now I know it came out of a 1968 Dart GTS-340. Quick visual is that it feels and looks good except shifting forks. Very small amount of metal in the bottom, extremely fine, like metalic paint fine. The paint on this I believe is factory/or replacement and thin. Razor-ed the pad and nothing but swirl marks from the factory fly cutter.
Before I bought the Twister a month ago, I looked on the net for how many Twisters were built and got zip. Maybe its this old techno-dino not searching right....anyone like to comment?