my work van is a 99 E350 Ford with the 7.3 International. Right now it has 347,000 miles on it. Since I've had it(300,000), I've put an injector driver module on it, an IPR sensor, dropped the fuel tank, got rid of the recirculating fuel pick up, added an external racor filter(fuel tank liners come apart on the Fords), new lift pump, new alternator and on my second starter. I drive it every day, loaded with my tools it crosses the scaled at 8500 lbs and gets 15 mpg with me driving it like an idiot. I'm not a Ford fan, but the 7.3(444E) international diesel was the best thing Ford ever did. It needs a set of injectors($250 each) injector harness' and might as well put glow plugs and harness' on while I have the valve covers off. I just keep putting it off. I probably won't find another 7.3 van, i don't even want to consider a 6.0. GM started using the D-max in their vans in 06(used the 6.5's up until 04 in vans), so I'll probably replace it with a D-max when the time comes. I've been looking at trucks my self, clean 7.3 Fords are pulling more money than the 6.0L even though the 7.3's are older. I tried to talk myself into a 6.5(great mileage, no power) with the idea of repowering it with a 12 valve(great power, great mileage) once it blows, but I really don't have the time to do it. If I run across a deal on a 7.3, I would jump on it if I had the cash, or if I find a 6.5 cheap enough(it will have to be cheap)