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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.
go with the trickflow stage 1 cam, its equal to the E303 cam, but the trickflow cam has a better lift on the exhaust side for more hp. E303= .498/.498... TF1 cam= .499/.512...