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General Car Related Discussion.To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.
i dont think anyone does one off the shelf as they are something thats needed untill around 700 ish horsepower so there wouldnt be much call for them, i would have thought you would need a custom one making
BTW I don't think you will get a 4" downpipe to clear the prop, it is tight for space the ones above both spit off into 2 X 2 1/4" pipes just before the prop & they only just clear, they run FFD boxes on them as well & these run a slightly thinner prop.