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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.
... amI expeirencing deja-vu? I could swear this same question got the same answers on at least two other threads this week.... started by the same person. Sheesh!
Okay, since you haven't heard the answer you're looking for yet, I'll tell you... you'll make 500rwhp on 87 Octane!