The 6.0's are reasonably priced (less than 20k). I had a 05 F-250 4dr 4x4 6.0 and didnt have any issues with it, so I may just go that route. there are several nice ones out there that I like but a 2wd, I really want a lifted one being this is a trade-off for a truck.
Something like this...but this one is a gasser


Here's an 05 2wd...104k and $21,500