727 question

Eventually, one on these years, I'm going to finish the 68 B'cuda ragtop. I am going with a 383 that I may or may not stroke out to 4-something. Regardless, it's an automatic car and will stay as such. Brings me to my question. I have avail to me, 3 727's. Wondering if one would be preferred over another. All 3 will need a rebuild, as they came out of "it ran when I parked it" vehicles, but we're original to each of their respective cars.
They are out of a '69 fury 383 4 barrel car, a 68 300, and a 71 imperial.

So again, would one be the prerred transfer to build?