You do not need any mods beyond standard underbody protection (diffs, steering, tank (optional)), just make sure everything is mechanically good condition. If I remember I will message you my planned and actual itinary. Anything else you change is for comfort/living arrangements, or because you plan on doing foolish things in the dessert. You are better of taking a standard vehicle as then you will be able to get spares and packing additional kit for any foolishness required (e.g. sand ladders)
