The standard stuff works fine, but the standard ventilation of the tank sucks if you have any pumping volume over that of a Walbro 250; even this is pushing it, especially if you plan to drive through turns with some enthusiasm (hot weather of course adds to expansion problems). Gasket sufficiency (and sender accuracy) hinges greatly on how effectively your tank is vented, kind of like with turbo pressure in an engine's crankcase. It took me years to figure this out, but hey, life is about learning, right?
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