"" Really, you could just add a "T" to the fuel line before the carb, and install a restriction in the line that returns to the tank. You just want to maintain a minimum steady flow of fuel through the fuel pump and lines""

The brass fitting that I shown in my previous reply is in this "T". 3/8" in and 3/8" out and I can adjust the flow back to the tank with a simple jet change. It is not stock but it flows well.