Quote:
Originally Posted by Z OH 6
Considering no one here has likely installed all of them to make that comparison, I would suspect this question is best answered by a few high end shops that have installed a few hundred of each of these.
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I agree that this question is better suited for a shop that has installed various brands. That said, I don't think you'll ever get an unbiased answer to this question. Shops work with particular vendors, will likely only have experience installing headers from those vendors and they'll want you to buy one of the products they carry.