BUY BY 3:00 PM CST AND ITEM WILL SHIP SAME DAY M-F The A1000 13204 return style Regulator was designed for use with our A1000 Fuel Pump or similar style EFI pumps in a carbureted application. This regulator is perfect for naturally aspirated or 'blow-through' supercharged engines. (1) ORB-10 inlet port and (1) ORB-08 return port. (2) ORB-06 outlet ports and 1/8" NPT gauge port. Fuel pressure rises on a 1:1 ratio when referencing boost. Return style design provides the ultimate, dynamic fuel delivery system. This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications. EFI conversions will require a larger-than-stock return line for proper low pressure control. Note: Requires AN-08 return line from botto