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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.
There is an article/segment in the new modified mustang that might help you out quite a bit....just stop at your local 711 or bookstore and take a few minutes to read it, you may find some direction.
Dont waste your time on split fires or any other gimmick spark plugs.........a good set of autolites and Ford 9MM wires will do just fine. The spark plug hype is just that..........hype.