Dual Pump Add-On fits Walbro F90000267/274/285 Radium Engineering for Acura NSX 1990-2005 - USA-RAD-20-2797 - DUAL PUMP ADD-ON Part numbers 20-2796 and 20-2797 are supplementary add-ons to the fuel pump hanger discussed above. NOTES: Part number 20-2790 or 20-2792 are required to use these add-ons. If a brushless pump was installed, a "dual pump add-on" CANNOT be used due to the extra brushless controller wires.  The architecture of this fuel tank is very unique. Because the opening is so small, 2 pumps cannot fit through at the same time.  The pump 2 assembly is placed in the tank first followed by the pump 1 assembly. An electrical plug and a SAE quick connector eliminate the need to perform tedious assembly before dropping the entire assembly into the tank. Both fuel pumps merge into the single 8AN ORB outlet of the fuel hat. And because of the integrated check valves, fuel pump staging is permitted.  FUEL PUMPS Choosing the best fuel pump is based on the expected engine power output, fuel type (gasoline, E85, etc.), and fuel pressure. P/N: 20-2796 **AEM 50-1000 **AEM 50-1200 **AEM 50-1220 **+AEM 50-1230 **+AEM 50-1235 *Walbro GSS342 P/N: 20-2797 *Walbro F90000267 *Walbro F90000274  *Walbro F90000285 *+Walbro F90000295 *Sock filters are included in this kit for these pumps.**Sock filters are included by the fuel pump manufacture.+These pumps do NOT feature a check valve. FEATURES Gasoline, Methanol, and E85 Compliant Compatible with Various Pumps Included Fuel Pump Filter Sock Plug and Play Installation Bolt-On Stainless Pump Bracket Instruction PDF