All of the diesel 1/2 tons have been canned again. Don't know why. With Ford it could be the falling out with Navistar.
Japan couldn't import 1/2 tons until I think 94' or 95', they were regulated on what they could import, and those regulations were loosened up. That's why they also don't import any larger SUV type vehicles.
I won't buy another gas pickup, and it'll be a few years before they can get diesels figured out again. With all of the pollution systems the mileage sucks, and the reliability isn't any good either. If you're ok with potentially paying a $10,000 fine if you get caught for removing it all there's always that option. If the price of diesel goes back up to $5/gal then it'd pay out pretty easily. Being most of the new diesel pickups are getting almost 25% less mileage than the models they were selling in 2006.