1 1/2 ID clear tube (home depot) fits right into the airbox run it under the plastics up to the fron fender, Get a 90 and run it up, drill your hole and connect it to 1 1/2 or 2 in PVC (painted black) Get a piece of flat stock steel or diamond plate and drill your hole for the pipe to fit through and bolt it to your rack for support. Simple as that. It cost about $15 and an hr to do. My boys has been done for a year now and works great.