Keep in mind the basics here, you need a certain fuel to air ratio for your engine to run at the speed your going. This is going to require the same amount of air whether you use a big or small throttle body due to the displacement of the engine remaining constant. So, equal air volume either way means it doesn't matter how you choke off the flow, you're still choking off the flow the same amount.
Seems to me you run the risk of royally screwing things up by switching things out and you'd lose top end power which might come in handy once in a while.
My vote is don't spend the time & effort on something unlikely to achieve a gain and very likely to be a mess.
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