Which engine for a used Winnebago Journey?

I have a Cat 3126-E and filters are easy to change out, about the only thing that would be hard when ever it needs changing are the two fan belts. That is where the side radiator really helps having. But I have sixty thousand miles on my Cat engine and had it in for service at Freight liner Las Vegas and they told me the belts were still good. So I bought the two belts anyways to carry in case I have to change them out. Other then that I just changed the oil and oil filter. Fuel filter is very easy to change out since it is outside the radiator and just inside the hood. Air filter is not bad to change out.

Both engines will last you a long time, so go for the floor plan that fits you.