RHS, you're very welcome.
Ram-Mount's site for the cradle (which has a standard rubber ball enabling lots of mounting accessories) is:
My PC is an older model 1510. Since I modified a Motion Computing cradle, Ram-Mount started making cradles for Fujitsu. The 1610 looks closest to mine and the Fujitsu specs (for the 3 cell battery) below match my dimensions:
Ram-Mount has dimensional drawings for their products, but I couldn't find cradle drawings. Their customer support is pretty good and I think they may have drawings for all cradles, which would help to find a close match.
Look on the site. They also have "universal" laptop tray mounts that may work.
I'm pretty sure you'll be able to piece together a good mounting solution. I've used them for all sorts of electronics mounting applications and I really like their stuff.