Precision engineered, manufactured, and tested by SP Machining Co.***Professional installation recommended. Our friends over at SP Machining Co, who are also Coyote enthusiasts, helped us prototype, test, and design these billet aluminum adapters designed to allow a 100% bolt-on installation of any Gen 1 or 2 intake manifold (except Boss and Cobra Jet) onto any 21+ F150. In our testing, the 18+ GT and GT350/Bullitt/Mach 1 manifolds provided the best performance.These kits are machined here in the USA from solid billet aluminum. Together with SP Machining, we’ve designed this to be the most complete, most affordable, and simplest way to install a high performance intake manifold on your Gen 4 Coyote engine. Includes: Billet Aluminum Lower Manifold adapters Billet Aluminum Upper manifold adapters Factory style Manifold O-Rings Billet Aluminum 2018+ GT350 to 21+ F150 TB adapter Associated hardware (M6 SHCS) Pre cut hoses to extend PCV to fit Billet Aluminum CMCV Lockouts Billet Aluminum Fuel rail adapters PCV Adapter Fitting Evap Adapter Fitting