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  1. #1

    787----spec 2 upper manifold with rossier pipe or coffman pipe

    who has already tested a spec 2 upper manifold with other pipe..
    i saw a guy's on pwctoady he run with it..

    look this treah......(it not me)

    i run a coffman race with spec 2 upper manifold on my mod hx,it actually pulls about 100 rpm more than my spec 2 shorty.
    jetted right it pulls as good as my spec 2 with a little more on is very easy to install in the hx.the one piece chamber stays very cool.

  2. #2
    who has already tested with rossier pipe?

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