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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.
above is correct. you will only need one to increase fuel preesure after a few mods, and dont forget to get a gauge with it set pressure between 38-42 psi vac off depending on mods.
After looking at yor current mods you could see some minor inprovements if you got on now.
you dont need a fuel regulator right now don't waste your money on one.
if you get a good set of heads,24 lb inj and a good aftermarket intake
then put a fuel regulator in.