Rich. that 3.42 diff ratio is more toward fuel economy. As a van, it is OK. As a TV, you won't run in OD much...only downhill & I would not run in OD downhill with my trailer behind. So, NO OD when towing.
Also, 6875 is not much for towing with a 33' trailer. You need to get your numbers together & be sure it is reasonable. That goes for your Dodge, too.
My E250 has 3.73 & 7400 lb tow rating.My Excursion has 11,000 lb tow rating.
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