Yup, ive read the y pipe will allow that but never ended up putting it in. The pullout tube will reach approx to the seat beside the OB (long bench) and the seat behind the driver. If you run lines you will lose heat and pressure. If you decide to run it further go to walmart and look at RV sewage hose. Its the same as the heatercraft and 3x thicker and only 12 bucks for 20 ft.
Look at getting a blanket that plugs into the heater tube. We have one and its awesome.