SanDiegoCJ
Non-Lemming
Especially if you do the 5th gear nut fix. I beat the shit out of my 2003 3500 dually with the NV4500 with zero problems.Making power with the 12 valve is literally hammer and chisel simple. Spend some money on fuel and air and you can really wake them up.
Alot of guys here will flame me for this, but the NV4500 is bombproof if you drive it right.
The front end in those trucks suck a dick, and drive like shit. If I was going to DD one I would look at fabricating a radius arm front end without the disconnecting passenger side axle shaft. Engineer a decent panhard bar. 05+ Super Duty as a template.