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I would think that they would want to introduce the fuel at the point where the velocity is high, so as to ensure that the fuel stays atomized, and doesn't fall out of suspension before it hits the cylinder.
At the same time, I can't see the factory putting something in the port that would slow the velocity of the charge going in to the combustion chamber. I would like to examine a CIS runner, just as it meets with the cylinder head. The way I'm looking at it, if the CIS runner is round, as would be a Weber manifold, then it should be ok. But, if the CIS runner has a similar divot, which matches up to the divot on the head, then I'm going to have to re-think how I want to approach this whole thing (which would be to use the MFI heads, as originally intended.
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