After looking at CPI cylinders and T-Rex cylinders, it occurred to me that the rear boost ports on stock Banshee cylinders, as well as in Athena, Vito's, RDZ, etc., have relatively narrow boost ports. But in a lot of the ported stuff that I have seen pictures of, nobody seemed to widen these even though there is a lot of room available. On CPI and T-Rex cylinders there are two side by side, which appear a lot wider than the stockish ones when added together. Is there a good reason why not to do this? It seems like an obvious improvement to me to gain intake flow and window open area and there does not seem to be any water jackets or other physical hindrances in the way.
Any thoughts on this based on experience?