Ok...here's the question you're about to hear...A LOT..."Do you have a way to monitor KR?"

If yes, chances are you could possibly go to a 3.6 or 3.4 pulley. If not, time to get a scan gauge or Aeroforce to monitor what's going on. Also, you could probably benefit more from a proper tune than a pulley change. Or proper tune AND pulley change...mmm possibilities.