Boost pressure is 12 psi, and the setup requires 93 octane fuel."Ford and Roush have teamed up on performance for years on and off the track," said Doug White, Ford's global performance-parts manager. "This new supercharger is another great example of our innovation in performance, greatly improving horsepower and torque so people can enjoy two of our most iconic vehicles even more."The supercharger kit will be available in early 2018 through Ford dealers, Ford Performance Warehouse Distributors and Roush Performance dealers. Additional information can be found at the Ford Performance website Cost was not mentioned in Ford's announcement, but by comparison a Ford Performance 670-horsepower supercharger kit for 2015-17 Mustangs lists for $7,100.