yes ..that's what it is..a RAMP that feeds and diverts the air too the carbs creating a forced induction type situation...there has been some heavy reported gains in HP with the proper insulators pan set up..
same watered down version of how a blow thru supercharger works.
not to mention the isolation of engine heat from carbs.
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "