First, 180* stats do have their roll. Down here in florida with the high heat these colder stats do help keep things cooler longer. Cooler engine temps translate into cooler transmission temps and heat is a major cause of damage to trans. Up north the colder Tstat isn't worth it. There is Zero power gain and without adjustments to the fans in the PCM for it it will barely reduce temps even by one degree.
Next, I agree that a 3.4" pulley is too large a drop with just a down pipe and box pcm. My suggestion is to do headers and find someone local to do an in car tune.
But before you do any of this, get a scan gauge that you want use every day that displays KR and fuel trims. I like the aeroforce, but i have had the scangauge II also.
