I think I'm the first one ever to mod the stories games! As a proof of concept, I replaced Vic's army model and texture with the fireman model and texture. Dustin, you rock man!
EDIT: Turns out that this is a beta model too! The firemen that come when there is a fire are more darker than this.
This is really interesting, it shows what can be done with the GTA Stories games. I'm currently working even harder to make it easy to mod GTA Stories. Heres some screens shots that my good buddy Aj posted on Rockstar Watch Boards.