Cloning a map from an older uE engine

So I am wanting to clone an old Americas Army map called “SF Hospital” into UE3 or UE4 if I decide to purchase the $19 dollar license.

Can this be done or is it more trouble than it’s worth?

It’s more trouble than it’s worth

Probably just better to re-build in UE4 from scratch.

Another question…

How can I go about getting the size of the old map?