I was just wondering what the internal diameter of the pipe from the header back is for the vtec model of our car. The reason is because I am replacing it with 2.5 inch all the way back for a NA application.
Thank you. I dont think you want this muffler, it is a one piece all the way back with the header welded onto it! Its all welded together so if you still want it then I guess I can sell it to you.
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