Hey we all want it all in our vehicles. The thought of a cheap trail rig thrown together and a 5.9 diesel just doesn't add up to me. Not unless you are climbing grippy terrian and hauling 4 tons! Trails and MPG to me sounds like light and small. Something that can take an hour to go 2 miles and not make a dent in the fuel tank, and also doesn't require a mil-spec drivetrain.
How about outlining overall cost, type of trails and expected cargo and people loads?