The 6.4 Powerstroke build to rule them all. Introducing the Kill Devil Diesel Level 3 Outlaw Series for the 6.4 Powerstroke - the no-compromises engine package for guys who refuse to settle for anything less than the best. This long block is built around our steel piston rotating assembly, featuring 2020 6.7 Powerstroke steel pistons adapted to the 6.4 with custom Wagler or Carrillo rods. The result is an insanely strong bottom end engineered for well over 1,000 horsepower. Up top, it comes stan