A few updates pics of our vac systems. Our original one is a 16hp trac vac and we made a wooden box on our switch n go dump box and have never taken it apart. Our newest one is the BG 35 hp originally we had the tarp system extend from the bed to the vac but that did not work so we had our welder create an addition to the bulkhead that raises and lowers with the bed. A few other features to the tarp system is that it has a solid top and mesh sides to prevent rain from getting in. It also has a side door to to load in sticks or any other debris.