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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 heard that the MAC shorties sometimes dont always line up correctly because the flange is not solid. I have BBK unequal ceramic coated shorties and the install was easy. i also did an O/R H- Pipe and flows out the back, sounds great
just to make it easy on you get BBK's, I have equal length and were very easy to install. Comes with new header bolts, header gaskets, all smog tubing and H-pipe studs and nuts, everything you need. They are only $194 shipped from brenspeed off ebay for chrome. I got polished ceramic from brothers for $299 shipped. Ceramic won't rust or turn blue plus keeps heat in to add horse. Don't forget to take a die grinder with carbide bit to remove excess metal from welding the flange on the inside.