I had an 04 F250 reg cab gasser with the 5.4 and the ZF6. It was the best truck I've ever owned. The 5.4 isn't a powerhouse, you have to use that six speed, don't be afraid to shift. But my old one got great mileage and I never had to do anything to it except replace an alternator.

I have a little work to do on the new one. Has the standard 5.4 exhaust leak on the passenger side manifold, the driver door panel is a little loose on one corner, and for some reason he plastidipped the chrome grill and worst of all the taillight lenses. I have to get that off there before I get rear ended.

Aside from that I put 200 miles on it yesterday bringing it home and taking my wife out to town for her birthday and everything seems tight as can be. Though I think this one may be thirstier than my old one, of course I may have had my foot in it a little more too.