If your set on ford's. Stay away from anything with a 6.4 or 6.0 powerstroke. Horribly expensive to maintain. The old 7.3 powerstrokes are good. 7.3 idi better in a way. I was a mechanic for 12yrs. In my opinion you'd be best served by something 5 or 6spd manual with a 12valve cummins. We have a 1996 12 valve 5 spd f700. Not fast but it gets the job done and gets around 10mpg loaded.