you can pick up the hose that runs from the valve cover to the CAI at any auto parts store. Measure what diameter the inside of the hose needs to be and take a guess to the length. go into the parts store and tell them you need that diameter crankcase breather hose, the length you guessed plus 6" to be sure you have enough. Should be no more than a buck or two.

BTW the AEM CAI should have come with it.