Help Identify Transmission

413 said
The T-10 was used in 1963 b-bodies.

the 833 came out in 1964 and was the only 4 speed in mopar cars RWD from then on.

they were not used in 383 barracudas.

This is my recollection

T-10's were not particularly super-duper transmissions. There is also a T-10 variant was used in Studes. There was a minor difference in input shaft but I no longer remember just what that was