I went with the dual CAI intake for 2 reasons;
1) it looks incredable I like the balanced engine bay.
2) as long as the intake on the engine is 3" that is about all the air it can take (excluding vortex theories it actually does increase some) BUT when one introduces filter restriction and head hight of the indution pipe by doubling the intake you can have as much as 50% restriction on the system and still be equal in induced air to the single intake type system.
Mike