[Schwarzeritter]

Interesting, I haven't looked up close at a Sound Package. Especially since I am not sure
how many cars came equipped with it, and to find out for me is sort of trivial haha.
But in short I think the Swiss Cheese method is better, although it sort of renders the " Intake Velocity Tube " useless.

However what would be very interesting, would be to set up a test bench and test each set up, and for kicks the 993 sound package and see which flowed the best. Although remember flow is good, but you still need velocity too. Although a extensive and well developed rig would be needed. Good times!

On filters, I would rather have a filter that filtrates better then flows, so long as it did not constrict air flow below that of the original filter unit. =D