Nitrous Express hardline kit for LS1 and LS6 intake manifolds is designed to work with the NX plate system (part #20935-10) and the custom solenoid bracket (part #15768). The kit provides the hardlines needed to route nitrous plumbing cleanly on LS1/LS6 manifolds using the NX plate-style installation.
Nitrous Express Hardline Kit for LS1/LS6 Manifold