Alpha Performance R35 GTR Fuel Rail Upgrade Package - Complete Fuel Rail KitThe factory GT R fuel rails are adequate to 900 horsepower but once we exceeded that with our Alpha turbo kits the restrictions became apparent. MORE BOOST & MORE POWER NEEDS MORE FUEL! The factory GT R fuel rails are adequate to 900 horsepower but once we exceeded that with our Alpha turbo kits the restrictions became apparent. The AMS Engineering Team went to work by dissecting and testing ALL of the factory components and lines in our fuel flow