the area i usually wheel at is flooded swamp and water is usually up to the top of my wheels and sometimes over my hood. my interior usually has to dry out for a week or so after wheelin and it smells pretty funky. used to have a problem with diffs and tranfer case and tranny gettin water inside but ran tubing from breathers to engine bay at top of firewall. i wanna get the carpet out and use a bedliner (brush on) or rubber mat. something removable. airbox usually gets water in it but never enough to wet filter, but its scary thinking another inch of water could probably hydro lock the engine.