You might want to wait for the Spectre Performance intake. It should be very price competitive. However once you see about 3 bars on the boost gauge you will hear the blower whine. I am anxiously waiting for the production model so they can complete the testing and release the product.
I have a completely stock intake soup to nuts from an 08 with less than 7200 miles on it. if you are interested in that LMK with a PM.
I had the stock intake replaced with a D3 stage ! & 2, which I am unhappy with. I am working on a difference sort of intake right now
which I hope will make better HP, and I am working on a different blower than the stock. That is really all I can say about this as I have a partner which perfers to keep it off the digest for now until it is finished. Which maybe a while. D3 has some issues they need to address with me also so the car is layed up for a while. LMK if interested.
What are you unhappy about with teh D3 intake setup? Power gains? Otherwise, it is a beautiful setup.