Guys with BBK o/r H-pipe and MAC long tubes headers post here, please

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From what I have heard, the BBK header exit flanges are a little closer together than mac headers, so the h-pipe won't work. That's why you have to buy a BBK specific h-pipe when you get BBK's headers. I have a BBK catted h-pipe sitting in my garage that it yet to be installed. If I remember to before I install it tonight, I can measure the center to center distance of the pipes.