the very minor issue here is simply that you won,t have a valid before & after dyno result to compare between the two, intake manifold prep levels,
thus you won,t have the ability to truly feel , or see on a dyno the DIFFERENCE,
your effort to increased efficiency had, on those improvements to the air flow rates, or the real measurable effect that had , had on the engine.
but I can assure you there is a measurable improvement , simply from similar pass intake port work.
Ive regularly seen power increases in the 15-20 hp range with similar work you've displayed,
but I know that gains in power from similar port & runner clean-up work, of over 25-30 hp are rather common.