Ported intakes
When Ryan @Shady Dell ported my W2s I asked about intake porting and his response was it might gain me 15 hp... I am sure that gain number would be dependant on the specific application.
That being said I did port match and blend the plenum of the NOS Victor I got. It turned out the manifold runners were a bit mis aligned from drivers to pass sides so it was a good thing I did the port matching.