The ZEX Classic Purple Nitrous System is iconic ZEX. Onlookerswill recognize the infamous purple bottle as yourace past the competition. This Classic Purple System issure to draw attention and have the crowd talking. Update your obsolete spray-bar type nitrous system with one of our Perimeter Plate Conversion Kits. This cost effective and easy-to-install alternativeimmediately delivers all the benefits of the ZEX Perimeter Plate Nitrous System without h Advanced Perimeter Injection technology results in even distribution of fueland nitrous for maximum power & engine safety; Creates a low pressure point in the intake plenum for increased engine airflow; Utilizes three revolutionary ZEX patented nitrous technologies: PerimeterInjection, Cryo-Sync Technology & Airflow Enhancement Technology; Available for square flange & Dominator applications