Yes I can swap a 3.4 pulley. But my setup should let me use as small as a 2.8 pulley from what i understand. My 99 is intercooled with a GenV.
You think the boost might be an issue? I've ran 13psi at the track previously with no issues a month or so ago, this problem suddenly surged and didn't have this problem back then. Only thing that appears to make this problem go away is when I run a 10:1 WOT AFR. I did this last night but will try it again tonight to see if this was a fluke or not.