Does this speedo thing work for the base GT or just the premium?
Does it go back to normal when you turn the car off and on again?
I tried it on my 2008 F250 SuperDuty and it worked there too. So I imagine it will work on your base GT.
And yes, it reverts back to normal when you restart your car.
2011 Mustang GT 5.0, Sterling Gray Metallic, Black leather, 6-spd manual w/3.73 rear end, Brembo brakes, Navigation/Electronics, HID, Security, Hood scoop, spoiler. KCCO