The processor is a socket 939 Opteron 170 of the well known over-clocking crazy stepping.
There is another Zalmann fan that is one size larger, but the smallness of the case limited the size I could go (I wanted to use a Thermalright, but it would have interfered with the case side).
I still need to finish up the mod wiring, hook up the power connectors, and a few other small things, but it generally ready for first boot!
Now to just get some time...