ZDoom

I downloaded a DeHacked WAD file. It has the dehacked file in there and it also contains new monsters, and a few new textures. But the rest of the stuff isn't in there. I wanted to use this WAD as a base and upgrade it but the problem is none of the stuff that appears in game that I want to change is in this WAD. For example, the walls that say UAC on them - I wanted to change it to match the new spacestation name but that wall texture isn't in this wad file so how can I change it?

I realize this WAD, being a dehacked, is probably just a patch and gains the rest from DOOM2 wad, but how can I upgrade this DeHacked to be a COMPLETE wad that has everything inside it? Without having to be a patch so it has all it needs in its own file?

Help please.

Without the file its nearly impossible to tell anything...