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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.
Well, I thought so to. I installed some Hooker headers with the ball and flange, sucked them up tight and I am still getting leaks. I figured I needed something in there to stop the leakage.