For 2004, Ford shifts the Harley-Davidson logos to the existing F-250 or F-350 4x4 models, a transition that has occurred for several reasons. First, customers asked for more power, and higher towing and hauling capacities. They also favored 4x4s (possibly to find the best fishing spots) over 2WD trucks. Next, the F-150 was completely reworked for 2004, and is only available in five standard trim models. Special edition models like the Harley-Davidson and SVT Lightning will join the squad over the next year or two. Finally, the two companies are celebrating a five-year alliance, and are doing so by building a larger, limited-edition truck. Two engine/transmission combinations are offered in the Super Duty. A 6.8-liter EFI Triton V-10 is backed by a four-speed automatic transmission and produces 310 hp at 4250 rpm and 425 lb-ft of torque at 3250 rpm. Also offered is a 6.0-liter Power Stroke Diesel V-8, matched to a five-speed automatic transmission that makes 325 hp at 3300 rpm and a massive 560 lb-ft of torque at 1600 rpm.