Honestly...3.3" really won't make a difference to be honest...try a 3.25" if you can get away with it...also...at your mod level...I'd have the blower ported. If it was me...I'd have it custom tuned...and bump the timing up and leave the 3.4" on there. A car with higher timing will be faster than a lower timing smaller pulley car. At this point, I'd also suggest going to a open cone intake setup...your getting to the point to where your wanting more flow...so slap that fliter on the throttle body and make some money and sell that junky MSP CAI. I am running stock axles now...but if your worried, ZZP sells built "stage" axle shafts. IMO, as long as your not driving like a moron, new stock ones are great. I'd also suggest a shift kit at this point so it isn't putting as much wear and tear on the clutches and bands of the stock trans...get one from either Intense-Racing or Triple Edge Performance's TransGo kit...I have the TransGo kit and it RAPES the gears...an awesome mod.