I have a friend who has a Ford Excursion. He put a chip in it, six inch exhaust, and propane injection. It didn't cost him that much and he now has something like 900 lb/ft of torque. The thing will spin all four tires off the line, with a 4" lift and 35s, and still desecrate any mustang stoplight to stoplight. For more info on diesel power, I might check out http://www.bankspower.com . Not exactly your motor they deal with, but they are the leader in the diesel aftermarket field. Maybe someone in their tech department could help you out, I've heard they're good to work with.