KMH to MPH 2001 onwards
 

I have a jap sti7 and the speedo is still in kmh, I believe I need an electronic device to change the speedo to mph, is this true, where do I get one and how is it fitted, I can get the total km reading changed to miles after wards I just want my speedo and clocks working right. Also do I need to change the decals or just cover the kmh with mph...