Thought I would share my experiences with the superduty. We have 3 in our family business a 2000, 02, and a 08. They all are v10s automatics, 4x4, with the 4.30 gears. We have had excellent service from all them. They all have over 150,000 miles running the original trans, zero motor problems not even an alternator or starter. The trucks have been serviced every 3 thousand, trans every 25 thousand. We also have a few late 90s chevs with the 454 and the v10 has more pulling power and get better mileage. We have had to replace ball joints, front bearings, hubs, and a pinion seal on the 2000. The v10 is the exact same motor as the 5.4, just 2 extra cylinders other than that it is exactly the same engine. My bro in law is a mechanic at questar and they have way more problems with the diesels than the v10s. His service truck has nearly 300,000 on it.