Well bored at work again and for some odd reason intake manifolds poped up in my head. I'm a good welder, I can get unlimited aluminum plates at work as thick or thin as I want. And I have use of all the metal working tools I'd need just have to use them on my own time. So where can I go to learn in depth about intake manifold, i.e. how to get optimum flow, and what is too big/too little. I know I could make one, but if I do I want to know my shit, so at least it's an improvement over stock, and not a tin can with intake runners welded to it.