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Message: <blockquote data-quote="Gtnut1996" data-source="post: 49260" data-attributes="member: 8835"><p>In my oppinion I am not too impressed with the manifold. I was reading that TFS claims that it performs like a bullit manifold. I talked to the rep from trick flow at the shades of the past street rod show and he told me that it is going to blow everything away(of course he works for them so I know he will talk it up). I was wanting the manifold until I read what I read. The P-51 and new edelbrock is not a street manifold, and the pi manifold still does break. I am personally waiting for the vri manifold to come out. It can be adjusted to be a long or short runner. I read about it in a magazine, then when I picked up the book Modifying 4.6/5.4L Ford Horsepower on the dyno they had a test on it. The Long runner gained 36 hp with a gain in torque and horsepower through the whole range. The short runner gained 75 horsepower. They were tested against a pi intake manifold. The test motor did have a 4.6 to 5.0 stroker kit and stage 3 heads from tea. VRI says that they are still working on it. It is all metal and by far the best looking in my opinion.</p></blockquote><p></p>