This kit is rated at 6 to 7 psi versus the 7 to 8 psi of the Stage II system. From my understanding, the kit doesn't require any additional piping to fit the Boss Manifold (assuming that an oversized throttle body isn't being used). The coupler going from the charge tubing to the throttle body has enough play in it that it can reach the Boss 302R Manifold without permanent modifications. However, F150s with a Boss Manifold will require a custom dyno tune, and going with one of ProCharger's Tuner Kits would be a better bet.