Trying to figure out what this is it came out of my 64 barracuda 318 4 speed

AJ/FormS said

The last A833 Mopar direct drive ever built was in maybe 1974, so
"Newer" is relative.
IMO the 3.09low, if that is what you have, for street use, is already the best core available, and
it can be relatively easily converted to a slip-yoke style.

Click to expand...

Yeah, that's what I've run in my 65 Barracuda most of its life. Ran a 2.66 low gear trans for a couple of years and with 3.23 gears it was just awful. Went back to the 3.09 low gearset as soon as I figured out it would fit in a later case with the slip yoke main shaft and extension housing.