another question if i may

My milage has stopped working last week and i know it only needs a plastic little spindle or wheel to get it going again, BUT i was thinking of a little blinging.
If i wanted to put say half digital half clocks on there something like the ones in the photos of this link
http://cgi.ebay.co.uk/2004-HONDA-CBR-10 ... 3caf3d9967
or maybe you can advice me of any that will fit.
cheers
paul