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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 have a friend that is putting 1 3/4 headers on a 2 1/2 in H Pipe, and we can't get it to seal. with going to 1 3/4 in header do you have to go with a 3in H pipe?