Auto Meter has expanded the selection of speedometers equipped with their award winning integrated GPS technology.  On top of the current lines: Sport Comp, Ultra Lite, Phantom and Street Rod lines, this exciting tech is now available thru Marken Performance in Carbon Fiber (part # 4780), Traditional Chrome (part # 2480) and Z Series (part # 2680) for 3-3/8" gauges.  These highly 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.  Even changes in gear ratio or tire and wheel size has no effect on these units’ pinpoint accuracy, so go ahead and put larger tires on or a different gear ratio for that launch you want.  Configurable Rally Nav display shows odometer, trip odometer, time/date, GPS coordinates, heading info, compass, and peak speed recall.