Originally posted by Agent
Waste of money. You'll gain very little out of it and you'll have spent a hell of a lot of money (if you get it done right). Money better spent on a nitrous setup.
If you're building a normally aspirated motor, then a good port/polish job will gain you about 10 hp or perhaps more.
I don't see how a ported head and nitrous are mutually exclusive. But if you only get one "big mod" then that's your thing.