Weight rating, 5er vs conventional

Absolutely do NOT even consider a Ford 6.0L diesel. They were junk. Ford 6.4L motors were not much better. So avoid Ford diesels in the years your looking at. They can be made better, but at what cost? Cummins I6 motors are a true 500K motor with years and years of service behind them. Besides they have 25% fewer moving parts. GM forces their diesel buyers into only one rear end configuration. See they all have their downsides. My 10 year old Dodge 6.7L is a pulling beast that also gets decent fuel economy. You need to go looking and test driving them. Pick one you feel is best for your situation and go.