I haven't heard a SC'd stang with an X pipe yet but I have heard a couple of NA ones and to me the X pipe take out all the rumble and smoothes it out. Too much for my taste. I wanted an X pipe till after I heard them and decided I like stangs with the H pipe and that distinctive mustang rumble... Well that's my .02...
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92GT all the free stuff and a few bolt-ons, lowered with Ebiach's and Koni's, Kenny Brown subframe connectors, lower G-brace and jacking rails. BBK upper and lower control arms, polyurethane bushings all around and Ken Bell blower, ram-air, 80mm mass air, etc.