I went from a 2003 Dodge 5.9 to a 2008 6.4 Dually and so far (2000 miles) I love this truck! I drove it from rust free Mesa Arizona to the salty state of Northern Wisconsin and it's by far more comfortable than the dodge. The truck handles great and the motor is super quiet compared to my cummins. Not sure if the pulling power will compare but the truck is "FAST" and strong!!! The ford has 137,000 miles on it now, looks like new inside and out and the cleanest engine bay I've ever seen on a used truck with these miles. It makes me wonder??? The one thing I did notice is it performs the exhaust clean about every 200 miles or twice per tank from full. I'm getting around 13.5 on the computor and 12 or so on paper. The only calculation I did on paper was after some long mountain pulls. Not sure I'd do a thing to this truck on the order of deletes. I'm pretty satisfied the way it performs stock other than I was getting 20+ on the cummins stock! Any opinions on the fuel or exhaust cleaning PLEASE feel free to school me in. I'm sure I'm in for a whole new learning curve with the 6.4 ford............ Thanks in advance