We use precision machined AEM Fuel Rails on a lot of the cars we build here because they are high quality, and low cost. We have never had a problem with them, the threads are machined clean, they are durable, they dont break, and they have a big enough bore for 1000hp. You can use ethanol based fuels without any problem and the fit and finish is perfect.
AEM High Volume fuel rails feature a 1/2-inch fuel bore to support fuel flow for applications up to 1,000 horsepower. This large bore also dampens backpressure pulses created by larger injectors and works perfectly with stock injector sizes. An additional 1/8th NPT port is included to accommodate a nitrous set up or fuel pressure gauge. 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.
High Volume Fuel Rail. Black. Acura B18B1, B18C1 & B18C5