Re: You opinion, and my welcome.
So the diesel is already 4x4, or are you wondering if it's a good candidate to convert?
one thing to keep in mind is 80k is nearing the milaege where some issues may crop up if you don't get ahead of them (EGR/Oil coolers, sticking turbo, EGR valve etc ). I personally would not buy a 6.0 unless it were priced right to budget for the appropriate "bulletproofing" upgrades. For and '05, a new engine wiring harness may be needed too.
2000 E450 dually V10 wagon