There's not really much point without baking lightmaps and closing off the end sections, or doing something.
But these are the two files you will need. .lyt in the override and .mod in modules, the level is built for TSL but it will work in K1 as well.
Without lightmaps though, it's pitch black.
Edit : I don't know how to properly bake the lightmaps so the ones I baked were 512x512 which made the files 300mbs so I won't waste space uploading them lol but I will look at making smaller ones at some point.
gob.lyt gob.mod