the n1 makes no power over a stock intake mani.
i personally am not to impressed with the excessive mani.
i have a mani made in maylasia. im also not to impressed with it either, although i feel it is much better then excessive and it was cheap.
your best option is like cory said, have it custom built.
unfortuneatly there isnt many options as far as intake manis go for ve's, but the aft ones that are avaliable are better then stock or n1.
stratton.