The cone intakes look and sound nice.
Really, the VQs aren't great engines if you want to bolt on a couple of bits and see a good power gain. I'm planning to do a NA build at some point if funds allow, but realistically the HR is a pretty well optimised engine, so if you want a noticeable power gain you need to plow large amounts of cash into it. Like I said, until you're ready for financial and possibly emotional turmoil, just go with an exhaust that you like the sound of, some drop in air filters and an UpRev remap. The remap will give you nicer throttle response rather than a big power gain though.