what kind of air box does a ram air work with?

im a little confused maybe because its so late at night but is there a special air box the raim air works with? if so can someone point me to a link where i can buy one?

www.slponline.com (http://www.slponline.com) they make the airbox but if your going to buy one check ebay first cause you will pay out the nose to buy direct from slp, You can also buy one from some aftermarket ram air hood company such as suncoast and others I can't think of right now.

a few companies make the ram air setups you just have to search online