Since your Intake mani helps to determine where your powerband is going to be, it differs between manis... Low end - stock. Mid range - Skunk2 or Edelbrock. Upper RPM's - Venom or custom modified for larger plenum and shorter runners.
Where's YOUR powerband?
Port and Polish? Port-Matching would be great for it... and cleaning out the factory casting bumps would improve flow a bit... but I'm not sure what you mean by port and polish...well im definately looking for low end power. so if what u say is true about these mani's i would stay stock mani. would i loose low end if i port and polish?