Well if you put dp's on your car you won't be passing emissions. If you want to still pass emissions you'll need to either A...swap them back in for the test about a week before you go...or B. just do the mid pipes and leave the stock dps on. If you really looking for power you should do all 3. Its really a quiet motor compared to others. As long as you don't have straight pipes out back it won't be too bad.
Faster, faster, faster, until the thrill of speed overcomes the fear of death… – Hunter Thompson