16.9 is a good price on an 04. i have the exact same truck with the exact same mileage. i bought the truck new and have kept it emmaculate. i think that the 2 most important things to consider if i was buying it and knowing what i know now is has it been burning good fuel and has the oil change maintenience been kept up and how frequent. i always run the best fuel i can, along with cetane additive and cleaner every tank and have changed my oil every 3,000 miles and fuel filter and seperator every 5,000 miles. there may be no way of knowing about the quality of fuel, but i have proof of my oil changes (through FORD who did them). this may be anal but i pull a 32 ft rv across the country, hills, mountains, 7% grades, snow in wi & new york, heat in arizona, blowing dust, and have never been let down by my 6.0. it has power when i need it and room and comfort to ride in. my 04 has paid for itself 2 fold and still is making me money with money spent on good maintience it looks like it has a long ways to go. check on its maintience record through owner or ford. they'll have it if they kept it up
