The fuel regulator must be as close to the carb as possible and a return line back to the tank from the regulator, you want the least amount of fuel dead headed to the carb. or else the regulator does not work as a return regulator the fuel will get hot, will be hard on the pump, the response of the fuel pressure rise will be to slow.
You need a 2.5 power valve or else don't use one at all.
