GM / Dodge Ratio Adapter, Select Speed Up Rate
#54RA2. If your truck tires have been switched to larger tires or you just need to speed up your speedometer this one will correct your problem. This part will speed up your speedometer reading. Use +61% to convert MPH to Kilometers. These adapters go to the transmission or transfer case only. Not behind the speedometer head itself.
Main Speedometer Gear Page CLICK HERE