Sorry but there is nobody here who can authorize you to use an asset from any of the Star Wars: Knights of the Old Republic games in another game. LucasArts issued a
press release back in 2002 that more or less supported game modifications of LucasArts games. However porting what are essentially copyrighted works from a LucasArts-published game to a non-LucasArts published game probably isn't going to fly, even if it's released free of charge and not-for-profit.
The only contact information I can provide is the general post office box for LucasArts posted on their
contact page.