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I've been toying with the idea of putting a Magnaflow true Xpipe, without the cats, "off road use only" pipes on my stang, BUT...Before I do, I want to know what some of the long tube header options you guys have installed are. How much louder will it make the car? What are you guys seeing for performance gains?Are headersa better option than the quicker xpipe install,and will there be a significant difference in performance. I am also taking into consideration the installation of a Paxton S/C with the air to air intercooler in the spring.