Resurrecting Google's Search Appliance Software [YouTube] [video]

I saw Action Retro's recent video on buying an old Google Search Appliance server and learned that many of them had been converted back to boring old Dell R710's

With a bit of effort and the help of a friend I was able to get the software stack up and running again!

I'd like to try getting one of the actual Google Search Appliance servers and attempting to flash its BIOS back to the Google branded one, but I don't currently have the money for the $1200(!) that eBay sellers seem to want for one