A lot of airlines are using today the 747-400/200 cargo. I think there is no need for rework, just adding windowless livery of a cargo airline.
Please put more detail into your post and also include a picture. This isn’t going to fly.
Please explain why you want this a little bit more
There already exists a topic for the 747-400F. I’m not sure about a -200F though.
As mentioned above, include more information please and only request 1 feature per topic!