I purchased my Dodge used with over 100k miles on it. Shortly after purchase I found the truck was plagued with mechanical problems. Since I bought the truck I've put a mere 12,000 miles on it. Two transmissions, two sets of ball joints, a steering box, a fuel pump, and an AC compressor later I wish I'd spent a little more money on the competition.
With its stiff suspension, solid front axle and healthy motor, my Dodge seems to outwork the competition, provided it's not sitting at a garage.
The only improvement I could suggest is to make the truck more reliable after it's slightly used.