I'd definitely go with a VAK system from adam over at prototypepower. He's dyno'd several different intakes and the results were within 3-5 horsepower. This is also including the stock airbox w/silencers removed and K&N drop in. The real power is in the uppercharge pipe because the factory one swells under boost and isn't very reliable. The nice part about adam's vak kit is you can have both the intake and uppercharge pipe all matching in almost whatever color you want. I do the custom airbrush work for his company, so if someone wants flames or a chameleon colored intake or somethin I can do that. You can check out his site at
www.prototypepower.com for pricing and availability.