The problem is that a mod like this would require Quanon's approval and I don't think he's been very active as of late.
The good news is that something like this is actually fairly easy to do. I like taking DIY approaches for stuff like this so I can walk you through it but the use of the end result needs to be restricted to yourself and yourself only: no uploading or sharing via private message without Quanon's approval since this is based on assets he has made.
With that out of the way, here's the tutorial. You're gonna need an image editor such as Photoshop or Gimp. You won't need to do anything fancy but you'll need an image editing software.
Grab the following file from Quanon's mod: "P_BastilaH04.tga" and place it in a folder somewhere on your computer.
Extract "P_BastilaH04D.tga" from the other mod you have listed, this one contains the dark side eyes that you want. Place it in the same folder as the other .tga file.
The "D" at the end of the file name indicates that it is the dark side texture variant for Bastila. Rename that last file to something like "P_BastilaH04D001.tga" or whatever to avoid conflict later on.
Now copy the first file, the Bastila texture made by Quanon and rename it to "P_BastilaH04D.tga". This is the one you're going to work on and that you'll place in your override folder in the end.
Now open the two dark side textures (the newly created "P_BastilaH04D.tga" and the one you had renamed, I'm gonna assume you used "P_BastilaH04D001.tga") into your image editor
What you need to do is simple: You need to grab the dark side eye texture from "P_BstilaH04D001" and move it onto the copy of Quanon's texture. You can do so using a lasso tool, a polygonal lasso tool or any similar mean of selection your image editor might have. Select the eye as best as you can and move it onto the other texture and place it exactly over the existing eye texture.
And that's it! Save "P_BastilaH04D" (you need to keep the .tga file format) and copy/paste the file into your swkotor/override folder.
I want to add that the dark side eye texture on the mod you've chosen is not of great quality. I suggest you take a look at Shem's movie style dark side transition mod for your eye texture. The following files in that mod use a similar UV map for the eye texture to Bastila's, allowing you to use them without too much trouble:
PFHA02d3
PFHA03d3
PFHC04d3
I want to stress again that whatever you chose to do with this, you can under no circumstances share your files without original authors' consent. Good luck.