Need a hand identifying...

I'm going to go ahead and admit now that I'm a tinkerer and this is my first "real" project car. My dad has rebuilt a lot of stuff but got out of it in the past few years.

I'm guessing that I won't be able to tell until I drop the old trans right?

If you can positively identify the engine year then that would tell you. You would need to ask what the two hub measurements are so you could see what your transmission hub is for sure.