Radium Fuel RailThis fuel rail features four 8AN ORB ports, two on the bottom and one at each end. O ring style fittings must be used in these ports. No fittings are included with this fuel rail and must be purchased separately. Appropriate fittings must be selected based on the specific application. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. To verify