The car looks nice, but not my taste, and not $55,000 nice.
One other thing, a 56 engine is a 317, not a 347, but 57, is a 347. Some one has their facts wrong, or the engine could be a 317 if it was from a 56. I guess if it were just bought to cruise, it wouldn't be horrible to drive with a 317, but you're giving up a lot of HP, and torque with a 317. I owned a couple 59s, they're heavy, and a wagon is a little heavier than a car is.
That car would be a better driver with a 455 in it, I owned 2 of the early 70s clamshell wagons with 455s in them. It's nice to have that torque to get them moving. The T 400 would also be a better choice as the older hydramatics are not as smooth shifting, and parts availability, as well as a tech that can work on them is pretty limited at this point in time.