GM / Dodge / Ford Ratio Adapter, Select Slow Down Percent
#54RA. This GM / Dodge / Ford ratio adapter will slow your speedometer reading down. Made for low rear end ratios with short tires. Offset for clearance reasons. If your GM speedometer reads too fast with 15 and 45 teeth gears then you need this part. This part will slow down your speedometer reading. Use this one to convert Kilometers to MPH.