Well, looks like I might have a little money to spend. So, 03 GT with a goal of 550-600 whp. I'm not sold on turbo kits for daily drivers, and I'm not a big fan of centri's, so that leaves us with Torque Tech or Kenne Bell. The 2.1L KB is to small so that moves me to the 2.6. The TT 1900 kit says it has more than enough ability for my goal, but does it really? KB says the 2.1 will go well over 500, but the efficency dies much past 10psi and the 1900 is smaller so not sure about it. Opinions please..........