If I were to agree with anyone here my vote has to go with Brian.
Plus I like the thought of doing it all at once as I did. Tune, 185mm Pullies, CAI, Heat exchanger along with all the "little" goodies. When it rolled out of my shop it was like some other animal all together. A very viscious one to say the least. I have mine tuned for high end road course speeds so leaning out, even at 22psi and in turns above 160mph has never been a problem. As far as the issues with these crank pullies, it has all been worth it. I LOVE THIS CAR!!!!
Mike