3.6 pulley MAYBE if you have no knock. Are you scanning with anything?
Headers would be the best thing to get to start with since they are only 200$.
Why did you buy shorter dogbones? Are you lowered? If your not lowered there is no use for the shorter dogbones.
On the 04+ shorter dogbones are useless since you can't use them with any headers, a plog if your gonna go that route, but headers are still better. If and when you decide to lower the car, you should run mount spacers from VinnieGTP, they are the best solution as shorter dogbones can cause issues.