I was looking at the possibility of ditching the stock cluster and going with that Koso unit. I can't decide if I like it or hate it though. Dimming it at night would be a necessity. I think it's equal parts cool and "ricer".
KOSO RX2 VFR StreetFighter The other I was looking at was going with a Cyberdyne digital gauge (3 3/8"):
![](http://www.cyberdynegauges.net/guagepics/Blue/tachometer.jpg)
or their mini-tach (2 1/16"):
![](http://www.cyberdynegauges.net/guagepics/Blue/minitach.jpg)