I have a 06 dually with an 8' bed with a 11'6" camper. I tow a 24' enclosed all over. Since it overhangs 3'6" I had to put a 4' extension bar on. To get one rated for the load I had to put a class 5 hitch with a 2 1/2" receiver. The camper is around 4400lb loaded. THat with the load equalizer bars it does it fine. I think a 2500 you would want airbags.