I am thinking of buying a '97 F350 dually extended cab with Powerstroke diesel and automatic. I want to pull a 5th Wheel Camper. I also want to get 4WD since I have been stuck on wet grassy fields before. I don't really know if this is a good idea or not to get 4WD. I am also worried about how high they are with 4WD and if a 5th wheel camper will fit over the bed rails. Would like to hear anybody's experience in needing 4WD for camping or in the bed height issue. I don't plan on using this off-road at all. Only highway & secondary roads plus state park roads to campgrounds.