I didn't have any trouble reading my TrailTech Vapor digital gauges - but the dashboard they sell with the turn signal, neutral and high beam light is a different story.  In direct sunlight it was nearly impossible to see the turn signal indicators, even after I changed the indicator lights to brighter LED's.  Their dashboard looks nice and works fine on cloudy days and at night.....not so good in sunlight.  I did like the trip meter, clock, and engine temperature gauge - the outdoor temperature gauge was always about 15 degrees off....I would be really cold and the thing would say it was 65 degrees!

The dual speedo/tach I used is a Speedhut brand, and Dime City sells a similar one that they buy from Speedhut and have their own printing put on it.  The units are not waterproof where the wires go into the back, and you have to do something to get that sealed up.  RTV silicone would do it.....but that would look a bit tacky.  I made some plastic covers and glued them in place.  On the last Dragon run Springman, Art Webb and I got hit by a really hard downpour, and the speedometer stayed dry inside!

The stock speedometer is about 3-13/16" diameter at the outside of the chrome bezel.  I think the 90 degree angle of the cable drive would be a bit troublesome if you moved it up to the handlebars/forks.

Speedhut makes a small 3-3/8" GPS speedometer that is $ 259, and you can customize the face to a lot of different font style or colors. You will have to seal wires out the back of the case.  It has a lot of features like altitude, trip meter, maximum speed, time, direction, clock, 0-60 mph time, 1/4 mile time.  They most likely have a version with high beam and turn signal indicators.....although I found they are not visible in direct sunlight.  I had them shorten my antenna cable to 18" and I mounted the antenna on the top of my front brake master cylinder with a velcro strip, and it works just fine.

http://www.speedhut.com/gauge/GR338-GPS-01/1/GPS-Speedometer-Gauge-120mph