Thanks for the reply, it's a brilliant mod with tons of great models, but it's too bad the author never shows up again. I can only try to find if there are references to other people's models in this mod that allow free use...If the mod is for your personal use, you are free to use the assets without asking for permission. If not, I guess you will not be able to use them because you will not get a permission from their creators who have been inactive for so long and probably will never appear again.