Trying to resurrect this thread, I bought these same headers and now that I am going to install I am going to do the uppipe as well even though I have the sti one in place. This is after reading grimm's writeup on the uppipe flow rates recently.
And since this thread was really old, I would like everyone's 2 cents on the better uppipe these days...flex/no flex, brand, personal experience/opinion....let it fly! Looked for the Cobb inconel and it appears these were d/c'd a long time ago but that would have probably been my first choice.
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Stuff sold by the gram is always more exciting than stuff sold by the pound. JC
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