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I had 3.73 Gears installed in my 08 manual trans. GT at my Ford dealer and they told me the speedo would be off a little becuase they could not flash the computer for 3.73s. They did flash it to 3.55 from the factory 3.31 gears so I guess thats better than not flashing it at all. Do any of...

Hello. I Have a 2008 Vista Blue Mustang GT coupe that was in storage for the winter and I just got it out on Friday. Installed my first mod Saturday, Flowmaster American Thunder mufflers. Pretty easy to install. Took me about an hour and a half. Installed in my driveway. They sound good...