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I have a new small 72GPH Carter but I may buy a 110GPH one instead, I don't want to starve the 528 at WOT. It has the Race Carter mechanical on there with a regulator.

I'd run a psi gauge (isolated or otherwise) to the inside & you'd want several psi at WOT in high gear right at the carb inlet fitting(s). On the "otherwise" you wouldn't wanna a direct gauge inside permanently but for a 1 day test you'll know right then if your delivery setup is adequate. You dont wanna fry that beast from it going lean

live every 24 hour block of time like it's your last day on earth