Youve Made Your Vehicle Fast With Mopar Parts Now Its Time To Protect Your Investment With A Complement Of Instruments You Can Trust To Keep You Informed Of Whats Really Going On Under The Hood. Officially Licensed Mopar Classic Gauges From Autometer Are Backed By Accurate And Reliable Track-Tested Race-Proven Electric Performance Movements Finished In Chrome Bezels And Easy To Read Black Dials Emblazoned With The Red White And Blue Mopar Heritage Logo. Speeding Tickets Are No Fun. Calibrating A Factory Speedometer After Updating Your Differential Gearing And Wheel And Tire Combo Isnt A Great Deal Of Fun Either. Autometers Electronic Programmable Speedometer Makes Short Work Of Both Providing An Easy To Install And Easy To Calibrate Solution That Will Help Keep Your Speed Exactly Where It Needs To Be. Compatible With Most Factory Speed Senders On Late Model Transmissions As Well As Autometers Own Solutions For Classic Mopar Transmissions Youll Wonder Why You Ever Struggled With Your Speedometer Before. Calibration Is As Simple As A Two Mile Drive Or For Even Easier Operation Autometers Gps Speedometer Sender Is A Simple Plug And Play Solution For Any Application.