8) none that i know of, perhaps you can contact classic inlines and see if mike will sell you one. but they are not hard to make, or have made if you make a proper template. start by making a template of exactly what you want made, be sure to allow for maximum port size, and the thickness of the header tubing you plan to run, and when you are satisfied with the template, you can either cut the flange material yourself, or have someone cut it for you on a proper automated metal cutter. i tend to prefer a water jet system as the edges are much cleaner than a plasma cutter, and you may not have a laser cutter in your area. i recommend using 3/8" thick steel for your header flange. and dont forget the bolt holes on your template, i know, you already know that, but you would be surprised at how often things like that ARE forgotten.