Frank, I used a very scientific method when building my intake. A gentleman I have been aquainted with for some time combined barley, hops, yeast and water. He allowed this mixture to age for some time in beech wood barrels. This brew was then liberally applied to the thought process of my intake and exhaust system. Upon application I realized that this what not a project to be taken lightly and recruited a couple of good friends to assist me in the application process. Once this mixture of grains and water had been thoroughly applied, so began the discussion and fabrication of the final product you now see.