I had the 5.4 a long time ago. Had the 6.7 power stroke later on. Curerently drive the v10 version. Its 1000 percent better. Same torque as diesel did back then without worrying about getting stranded when the ice storms hit the first week of september, or when it dips to 10 degrees the 2nd week of august at 11,000 feet, or always looking for an outlet to charge the block heater every day in winter. Or paying 5x price for oil change, or paying a dollar more for fuel. I know everyone swears with the proper additives diesel cant gel at 20 degrees but here at 8,000 feet it does every time. That was a short lived mistake and the v10, 4 speed auto, with the limited slip sterling differential drags everything i own anywhere i want in the mountains effortlessly. Thing almost feels like its run away going 90 mph up a 10% grade.