Thanks guys! It sounds like it will be difficult to determine whether the complete transmission is a Direct Connection catalog piece or a part installed in a factory race car. I guess the odds are it was a catalog piece since I imagine they made a lot more for catalog sales. The only thing that keeps making me think it may be a factory race or early design part is the case does not appear to be steel bushed unless it is done from the inside and not all the way through the case.
Any ideas on the basket case trans? Brewer's Performance on the Moparts site said the tail was a 65 race hemi part with no speedo gear boss.
Here is a link to the Moparts discussion in case anyone is interested:
Aluminum 833 Transmission Thread
Thanks again,
Jason