"The NX direct port systems are for the crowd who have already modified their engines with high strength internal engine parts. These systems utilize the patented NX Piranha nozzle! Available standard with high tech distribution blocks, optional Next Generation rail technology. Nitrous system comes complete with nitrous bottle, stainless bottle brackets, stainless hard lines, nozzles, jetting, and all necessary electrical components. This system requires the drilling and tapping of intake"