You have got to be kidding!!! Have you considered reading your owners manual, the sticker on the airbox, or God forbid,USE the friggin' search????!!!!! The car has been around 18 yrs. Don't you think this been covered 100x or more? You can get them from numerous vendors on here, the interweb, or locally. Hope your evil helper monkey is up to the job.
SEARCH results (in case the monkey can't spell):
http://www.nsxprime.com/forums/search.php?searchid=3024771