well I got glow gauges on my Infiniti J30 and they have km/h marked. Bought them for $29 and they look to have gone down in price. Pretty easy to install if you know how to do electrical. Here is the link to the site with the gauges[edited by driverdriver]: [Here is a pic of my glow gauges:
If you have any questions concerning install, just e-mail me at:
[email protected]