This will exchange all the portals with the crashed freighter.
Both are non-functioning props therefor this is just for the visual experience in your game.
The portals spawn rarely, so will the freighter which is why I have used the portal (also because it doesn't have any function).
I don't remember the freighter being so colorfull but it is what it is.
(You can't actually walk directly on the freighter because the "hitbox" was very fastly made in a block shape.)
Just put the .pak file in your Pcbanks folder.