Check out the F350. A long bed crew cab diesel single wheel is now rated to carry about 4600 pounds. Plus the long bed gives you a 48 gallon tank. For a few bucks more the F350 does so much more just in case you ever need it and has the correct sticker on the door jam to prove it. Should be worth a lot more on trade in as well.
F250 diesel has a really crappy load rating that most owners dont realize until after they buy it.
