I think Ryca has a Tach and Speedo with mounts sold seperately, You would have to ask someone else about how they look on a stock bike or if they will even function correctly on a stock bike, but I don't see why they wouldnt?
This page shows the brackets and the related items (for me) shows the cable, tach, and speedo
http://shop.rycamotors.com/gauge_brackets.html