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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.
they are dangerous, If a fuel explosion happens it follows the fuel line to the gauge.. and then you have fire inside your car. my fuel pressure gauge is mounted inside my engine compartment. best thing to do is put on a chasis dyno and check it while your making a pull.
I have a mechanical in cabin, using an isolator. Wasn't too bad to put in, but sure it was more of a pain than an electric. The isolator uses like 3/8 or 1/2 inch braided hose which is kind of a bitch to get through the firewall and up into the pillar like PRO50 has. I got the same gauge setup except with black face gauges...and on a 95.