do the dually. the 3/4 ton would pull it but you would not be able to safely control it. I have the set up you are looking at, an 06 D'max & the 30' trailer will be delivered in 1 more week. I haven't really towed anything to say so just yet, a few cars on a light weight car trailer. but nothing to work the truck.I am looking to buy a new 3500,what kind of fuel milage on the 06's,any pro,s ? con's ? I am going to pull a 30' gooseneck 21000 gvw, would a 2500 work?