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: If those are 58mm chevey throttle bodies, there are 2 58mm butterflys in each throttle body, that means there is about 16.32 cubic inches for air to flow through. A big single that is say 80mm only has about 7.74 cubic inches. The bigger the opening the more air you can force in under boost. and you keep your deck height in check, in the HOPES that you can keep the stock hood. looks like it's gonna be close.
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