I'm way behind on reading the forums so I don't know if you ever found the mini speedo you were looking for.

I have the Drag Specialties mini speedo and trick wheel mount that CycleX sells. (motor dress up page - item # MD-029 - $89.00) I mounted it but never had in on the road.

$45 + shipping.

I'll put some pictures on the yuku page then put a link on this forum asap.