I had no idea such a thing existed.... it is very old. I thought at first that you had a typo and were asking about a xw8600.
May I suggest buying a Z400 from eBay and making sure it has 6 instead of 4 memory sockets (this way you ensure you are getting the version 2 of that excellent workstation).
Some of the very old computers such as the xw8000 have parts that are virtually impossible to find and thus very expensive. In contrast, the Z400 is a highly capable workstation and is easy to find parts for, if needed. And advice, too.
I can help you with a Z400, but cannot help at all with a xw8000.