If it would be helpful, I took a recusrive binary diff of the SWKotOR directory before and after installing the mod. It's about 80MB instead of 50, and requires xpatch3 (and perl for the handy wrapper script), but it basically does the same thing the installer does. If you can get the installer to run in wine, I'd recommend that (I did, wine 1.7.24, playonlinux, Gentoo), but otherwise I can post a link to the patch and wrapper script for xpatch3