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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
I chose a BBK catted X pipe. Raspy sounds more like a race car but at first I though it was to quiet but I got used to it's distinct sound. Also more HP with X. X is style H is loud!
Jesus. If you havn't figured it out by now it's 99.9% preference of sound. The HP difference is stupid small so do not make a choice based on that, pick what you like the sound of best. They sound different also depending on the style muffler you're running. Just for the record X pipes do not always make more HP, it just depends on the setup.