Aeromotive 13204 Regulator, A1000 Carbureted Bypass - 2-Port Fuel pressure rises on a 1:1 ratio when referencing boost Bypass design provides the ultimate, dynamic fuel delivery system Ideal for converting from fuel injection to carburetion using the stock, in-tank pump EFI conversions will require a larger-than-stock return line for proper low pressure control Note: Requires AN-08 return line from bottom of regulator back to top of the tank