Hey all I just wanted to get everyone's (Hopefully many KB owners can chime in) opinion before I make the 6,000 investment. Are all those who've went with the KB happy they did? I want the 9psi IC, goal of 400 rwHp. How does the stang feel after a HP increase like that. Any regrets, like not just buying an 03 cobra. I realy like my mustang, but I'm thinking I should just maybe wait until the 06 cobra....decisions...decisions.