[gijoe77]

I've been playing with converting r5k o2's into r10k o2's with minimal effort - basically you need to remove the PCI rizer and put it off to the side. Your hostid will be a mess, but thats ok, you can actually still set yout lmhostid to whatever it was before and - nothing gets impacted.

The important pieces are the plastic piece that goes around the bigger r10k CPU and hold it in place, and 2x SGI O2 CPU Electrical Risers things to connect the CPU to the board.

I'll have to do this again because it was plretty easy - and no other workarounds were needed - the only problem was you loose the PCI slot - the R10k cpu is taking up the space.