'port and polish' goes further than just smoothing out the surface, it would increase the cross section of each port by removing material.. Using some sort of paint, or ceramic coating, or whatever, could smooth things out, but it wouldn't increase the cross section. If anything, it would reduce it.. and there is the risk that whatever is applied in the intake, comes off and takes part in combusting in the cylinder
...tell him that a formula one driver told you this
