This is the final in the 2nd series to be completed before the construction of a unit to run directly into the fuel injector system. The Series 2 has been designed to be installed so the Hydrogen gas will be fed into the air intake. A water sensor has been installed and a ½ inch hose will feed the Hydrogen to the engine. The unit is 12 inches high and has 11 stainless plates in it.(I have found the way to get rid of the sludge that forms in the water).