Whoops.
Actually, mine only goes to 140 but they can do whatever you want. I think they can do other colors also. Plus they calibrated the speedo so I just put it in and went! I wanted something different and I always liked the white gauges. Looks really cool!!!
http://www.buickgn.com/speedometer.htm Silver or white available but you have to get your speedo recalibrated by a speedometer shop if you use the 145mph version. These are overlays only