before the fuel pump IS NOT best - the pump can handle pumpin 'lumpy gas', but if the filter gets even a small amount of build up in it, the pump has a real hard time suckin gas from the tank and you end up w/ wierd problems due to lack of enuff pressure out of pump, usually when you get below half tank, and ultimately can damage the pump - the only place for an inline filter is between the pump and carb - factory put'em right at the carb inlet, some carbs even have a strainer screen just inside the fuel line fitting
Bill
