Is this better?? we believe, just a little green with envy on your rig. I just bought a class A Ford with the V10 gas and so far that engine has sure been faultless. And the whole thing is only 28 feet long, but then there's only one of me. And guess what, because I have one of the lightest frames on the F53 chassis, that thing actually accelerates. I can keep up with traffic. Now it roars and bellows doing it, but it seems quite happy. And because it's lighter, it moves right along. And actually handles after I added a front and rear stabilizers; driving a giant UPS van can get fun on the turnpike when semis are overtaking you at 10+. But you sit up there in the lap of luxury, with all that weight behind you, like a semi, and your driving environment is likely quieter and more comfortable. Funny, my insurance agent said get anything but a fifth wheel, apparently people overdrive their abilities. Now if they offered the DD six as an option, say in the 1600-1800 foot pound version, well my, that would do quite nicely. No replacement for displacement, but maybe today, the turbos will do the work. Let's face it, it's what happened to diesels. 200hp diesels became 400 hp diesels with turbo and intercooling. It works...but the engine has to be strong. The more they jack up these engines, the more they risk building some grenades.