Sport Compact Warehouse is your premier source of AEM Electronics Fuel Rails for your vehicle . Their high volume fuel rails feature a 1/2-inch fuel bore to support fuel flow for applications up to 1,000 horsepower. The large bore also dampens backpressure pulses created by larger injectors and can work perfectly with stock injector sizes. If you have na nitrious set up or a fuel pressure gauge, it features an additional 1/8th NPT port. A custom fuel line fitting is included for the factory fuel line, and the ends of each rail are pre tapped to accept -6 AN or 9/16"x18 fittings for users who want to use custom fuel lines. If you have any questions reach out to one of our experienced representatives and we will help you make a more informative decision.