Looks like my friend has a couple of brand new in the box JCWhitney Top Cases like I have that he is going to have available for sale if anyone is interested. He was saying at cost of $40 each. Here is how I mounted mine on my GS:
Holds a full face helmet and room for more.
Here is a link: http://www.jcwhitney.com/garage-pro-...60612y2005u0j3
They will fit on any bike with a rack. I know for a fact they fit on a KLR and a GS, and have seen them on lots of other bikes. Decent quality, lockable, and big enough.
Just a little added value for the tech day. He said he will bring them if anyone is interested. Just let me know.
PS We have a decen't sized crowd coming. It should be fun.