skorski is talking about an 05 Dodge with the boxed frame. In my opinion you do not need a rear sway bar because of the new frame. My 95 DRW had the rear sway bar and the 05 did not come with one nor was one an option. I had the same 11'-3" Lance camper on both trucks and the 05 handled the camper better without the rear sway bar than the 95 did with the rear sway bar. My yard stick to tell whether you need a rear sway bar is with a large camper when you pass an uncoming 18 wheeler on a 2 lane highway at 65 MPH. If your truck and camper sway bad, you need a rear sway bar. My 05 didn't sway with the camper and it didn't squat as much as the 95.