Hey all hows it going.. I am actually a focus driver, but I heard that a couple mazda guys may be running around with cosworth headers on their cars, which would be great cause it would mean the cheaper OBX header would fit on our cars. Now I'm running with the 2.0 dura, but since it's pretty much the same engine as the 2.3 I guess it really doesn't matter. Thanks for your input and happy modding.