Quote Originally Posted by matt5112 View Post
195* if you're stock, maybe a 180 if you're gonna try to move down to a 3.4" pulley, which would also require other mods... Namely exhaust and not catback.
I think he just wants to get his stock gtp running good. If he does a 180 t-stat his temps will be all over the place in a mix of around town driving and out of town driving since his PCM is programmed to kick the fans on at stock temps. But if you want to mod the car, then do what matt says, if you want to stay stock, go with the stock t-stat and plugs.