I'm guessing you don't know all the abuse the original owner or actually the new truck's Ford dealer did to it. First owner did their own maintenance ? Probably not the best fluids and parts ? Maybe sank it in a flood once or twice ? Went off road at the Grand Canyon maybe ? Tried to set a new Land Speed Record on their washboard road ? Pulled the converter off and burned the valves ? Forgot to reinstall the air cleaner filter a few times ? When the first dealer traded it to another dealer, did the driver run it out of town at full throttle ?
Don't tell me these things don't happen and the trucks should take it. When I worked at GM Milford Proving Grounds I had to order, drive and buy a new vehicle every year or so as part of my job. The dealer stories are nightmares. I had a few sports cars that I put event recorders in. On one (a 2000 Corvette) A kid running it through the car wash at the Howell Chevy dealer on delivery took it for a joyride for 75 miles and topped out the speed recorder channel at 156 mph with under 40 miles on it. Tires were flat spotted, left rear wheel slightly bent and the steering wheel was mis-aligned. Never knew a car wash could do such intentional damage. Apology was NOT accepted.