Here is some pictures of ZZ fabrications manifolds, this is the current production pieces. I was there earlier this week, to help him lay out my headers, Duramax oil pan, and Duramax tuned runner intake manifold. I saw some really cool stainless tuned runner pulling manifolds for 12 valves, which will be available thru a vendor that is paying for the development. This particular vendor is one of what I have in the past called old guard. Seems they are all coming around to the fact that airflow is essential to making reliable power.
I have heard that a few are trying to copy the ZZ manifold , maybe to save a few dollars , to this I say that the more manifolds that ZZ builds , the more experience that is gained to give you the best possible product. Who do you want to build a manifold, some one that saves you a few dollars, and builds a copy, or a person that builds hundreds of manifolds and refines them as data leads the way
