AN8 to and from the carb . Put the regulator on the return.
With this new fuel you have to keep it flowing or it will boil if dead ended at the carb like the old days.
The regulator is different when using it on the return. You cannot use a standard pressure regulator as used before the carburetor. The AN8 fuel line on my car goes right to the carb from the fuel pump the back to the tank after the regulator. Big difference in performance.
One reason they make these fuel lines.
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