Sounds like a great idea. I was always worried about the reg's driving one. I wanted to do the same thing. But, Back in 05 I bought me a 04 C4500 Chevy Kodiak,new. Was cheaper than a 1 ton dually at the time. Rides rough when not towing. 48' trailer with 2 cars weighs about 18,000, doesn't mind a headwind or hills. this truck was made to tow.