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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 say go with the PMS and intake if possible if not then just the PMS. That way you can get your tune down and it wont be as hard to tune in the future with upgrades.