" it's a V6 that most Ford F-150 use. "
Nope, the Gen II H.O. Ecoboost V6 that the Ford GT uses is unique to the GT. It's not the same as the one that used in the F-150. Remember the 2005-2006 Ford GT? It used a 5.4L Supercharged V8, The 1999-2003 Lightning pickup also used a 5.4L Supercharged GT. But beyond the displacement and the supercharger, the engine has nothing else in common. Same principle applies to the 2017 GT and the current F-150.
Then we get into the carbon fiber body and chassis, and pushrod suspension. It's not a car you can build in your garage, and if you could, you'd be money ahead to just buy one. But if you had the necessary skillset to actually do this, you'd already know this and would be asking this question in the first place.