When Dodge put the Cummins in their Ram thats when it started.imo.
There is nuttin wrong with the non turbo 7.3 or 6.9 in older Ford trucks.More power than a gaser with good mileage.

As for the 6.2 Chevy it's a gutless slug but your right.Lots of those motors here still running strong and fuel mileage with a 6.2 is excellent for a full size truck.