AutoMeter 3-3/8" Sport Comp GPS Speedometer w/Rally Nav Display YA0639 and IndyCar aero kits are

and IndyCar aero kits are available as add-ons

1967-1974 Mercury Marquis

The 4 mil thick Tearoff is most commonly used in all pavement applications and has been proven at racing speeds over 125mph

Current control circuit protects against coil overheating

AutoMeter 3-3/8" Sport Comp GPS Speedometer w/Rally Nav Display YA0639 and IndyCar aero kits areThe latest in technology and the easiest possible way to add a highly accurate speedometer to your vehicle. AutoMeter's advanced GPS Speedometers require no interface with your vehicle aside from power and ground. Their ultra fast, omnidirectional micro antenna is included for true plug and play functionality and never requires calibration. Configurable Rally Nav display shows odometer, trip odometer, time date, GPS coordinates, heading info, compass,