Hi guys.
i recently replaced my speedometer from MPH to KPH(i replaced mph dial with right handside japanese spec KPH dial) now the issue is that the dial is kph but the the speed of the needle is still in mph... so do i need to change the speed sensors aswell from moh to kph(which means i have to replace the old american spec with japanese spec)????

 

No, they all use the same speed sensors. You can't just change the gauge face, you have to change the whole gauge cluster because it's the circuit board in it that controls the movement of the gauge. I would try to find a cluster from any left hand drive country that isn't America. JDM clusters will work somewhat, but you lose interior lighting and have to extend some wiring.