The PERRIN Performance fuel rail has a larger center bore that will support even the highest flowing fuel injectors to produce maximum horse power. For the extreme tuner the PERRIN Performance™ fuel rail has a built in optional fuel port for external fuel pressure risers, additional fuel injectors, fuel gauge,or nitrous fuel line. It features a quick disconnect connector which will attach directly to existing hard fuel lines. No cutting or modification is required. This direct replacement installs in minutes