If you're using OXCE, then it would be possible.In my mod The X-Com Files, I currently have 52 portraits for each gender, with some more on the way. They can be converted for vanilla X-Com, but as mentioned before, it will not work in vanilla OXC.
Yes I was checking that out there are quite a bunch, yep I'm using OXCE but I'm not sure how to add them to my already existing game, I'm using old armor mods etc, should I just add the inv ruleset with the resources and that's it?