Head help....

They'll be lighter, and they'll add compression. They'll also add a little flow in the lift area of your cam. Those three will always make a well tuned car go faster. But by how much, and if that increase makes the expense worth it to you is anyone's guess. They are a better head. With a better chamber. And lighter. And easier to port. So if nothing else there's expansion room should you want to do more later.