This Radium Engineering fuel rail is a direct bolt-on with the Nissan SR20VE engines originally found in the following:  JDM 97-00 Nissan U14 Bluebird SSS-ZJDM 97-00 Nissan U14 Wingroad ZV-SJDM 97-00 Nissan P11 Primera Te-VJDM 97-00 Nissan P11 Primera G-V Manufactured with a large 0.69" internal bore, the fuel rail can support all necessary engine power requirements. The Radium fuel rail converts the OEM side feed fuel injector setup to top feed allowing the use of high flow 14mm O-ring fuel injectors (not included). This rail is compatible with E85. The rail is extruded and CNC machined from solid 6063 aluminum and black anodized for a high quality surface finish. With the combination of the OEM insulating spacers and the included thermal insulating mounting washers, the fuel rail is 100% isolated from intake manifold heat transfer. Included-Black Anodized Aluminum Fuel Rail-Black Anodized Aluminum Mounting Feet (x 3)-Stainless Steel Mounting Feet Bolts (x 6)-Thermal Insulating Mounting Washers (x 3)-Green Anodized Aluminum 25mm Injector Seats (x 4) NOTE: Fittings can be purchased separately using the options above.  Injector Dynamics ID1050-XDS-34-14-14Injector Dynamics ID1300-XDS-34-14-14Injector Dynamics ID1700-XDS-34-14-14Injector Dynamics ID2600-XDS-34-14-14  NOTE: Fuel Injectors are NOT included and must be purchased elsewhere. To reuse the factory fuel pressure regulator, select part number 20-0303 (shown below). Instruction PDF