Original injectors just drilled out for more flow. F6 snorkel. Better fuel pump, 4 inch dump to twin 3inch manta exhaust,which I fitted myself and it Saved me 900 bucks. Pwr intercooler and new pipes from air box right through to the throttle body, I fitted all that too. And last the bigger flapper and hole resized in turbo with a 12 pound actuator. I did get new valve springs but wasn't really necessary, As my motor is a late 06 model and it was a better set up than the older motors.