I want to get a mini speedo. Anyone have any cheapER suggestions?

Also, and this may sound stupid but, if the shoe fits, how do I attach an aftermarket speedo?
Triple tree modifications or what?

There are lots of after market Speedos, but like anything else, you get what you pay for. Koso is an expensive alternative, Ebay has cheaper dial ones. Any way you can mount it will work, as long as it's sturdy. Drill holes, use bolts an nuts.

Good luck.

Trailtech. The Vapor and Vector also show you engine temperature, nice thing to have, prop. 100-150 bucks

http://gstwins.com/gsboard/index.php?topic=49712.0

I use this Trailtech Endurance model on Enduro bikes, its the smallest but doesn't
have indicator lights for oil ETC, only the Trailtech Vapor/VEctor have that:

Yes, +1 on the trailtech. I have a vector on my Ktm enduro, and its a fantastic piece of equipment.

You can wire it into the system for nighttime illumination, or it runs on its own battery. Im on my third season with the original battery. And if you want to put the extra 30$ in, theres a remote hand control that mounts on the bars to change through the screens of odometer, average speed, max speed, two or three tripometers, and more. Plus engine temp (with an adjustable dummy light), a clock, and you can set service reminders by miles. I love it, best money I spent on the bike. The only downside is no tach, but i dont mind that on a 2 stroke.

The vapor is also an option, I know it counts revs, but other than that, Im not sure.