Crappy stock heads and an AFM powerpipe. The boost is a representation of how restrictive your intake tract is.
Think about blowing through a straw vs a toilet paper tube. The straw has more pressure.
It'll be worth saving up a few extra bucks going either supercharged or N/A. You will see more power out of the supercharger up high. Both have their pros and cons. I like the boost.
I spent about a grand over the cost of the supercharger on misc crap. Regardless, you WANT a tune ASAP on it.
Wes