I went out to take a closer look at the transmission.
I'm going to need a few cans of brake clean before i'll be able to decipher any relevant tag numbers.
It seems my transmission has a vacuum line on it, which might mean it was from a '63 or later. I believe the engine was out of a 63 mercury maruader, i don't think my pap would of used that cars transmission but it appears he may have.
I don't have any issue with it shifting really except I noticed a little delay with it kicking in to gear, when selected.
I'm afraid to remove the rubber hose from the "vent tube" but i guess i will let the car run for a while on the jackstands with the hose off and see how much total fluid ends up coming out of it.
Ill report back some findings once i get some cleaning under there and once i unplug the vent