My 96 Standard cab daily beater Dakota with 3.9 is on it's last legs, so I'm looking to ugrade to a 99-04 4 door Dakota. I've found some nice examples in my price range, all with around 100-120K miles.
My question is, which is better, the old 3.9, or the 4.7?

I figure the weight of that truck has to have the 3.9 right on the edge of what it can handle and still get decent mileage.

Which one is more reliable, fuel efficient, and more likely to get to 250K without a bunch of problems?

I have a 93 350 CTD to do all the heavy lifting, so other than the occasional engine block or 4 adults, the Dakota won't have to haul much.