Well......it's giving me some problems. I dumped the files in the override and I got this:
On the drag-n-drop, one file tried to overwrite another and I then realized I had the hood mod installed and that I_Mask_105.* was already being used. In addition to your (3) files, I also found I_Mask_105.mdx in the Override but not in your download. I deleted this. I also found I_mask_105.tga and a_helmet_105.uti in Override so I deleted those too since they were older files seemingly tied to the hood mod. I figured these three older files may have been interfering, but now the game crashes every time I spawn the mask and try to equip it. Any ideas?