X-pipes generally give a little more top-end power and a little less on the low end than H-pipes (generally a difference of only a few horsepower on a street motor). X-pipes have sort of an exotic sound, especially at high RPMS, whereas H-pipes have more of the deep 60s muscle car sound. X-pipes tend to work better with straight-through mufflers while H-pipes tend to work better with chambered mufflers.
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Strike down the unroadworthy!
2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more
'94 Rio Red Cobra: All the bolt-ons, 3.73s
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