Remembered this was on ebay and might help you out with one backplate.

http://cgi.ebay.com/ws/eBayISAPI.dll...tegory=13 723

"mike" wrote in message
news:qec0c.429702$xy6.2501598@attbi_s02...
need two preferably unbroken backplates. The current ones I have are in
several pieces and will look like crap repaired
email me if you can hook me up

Mike
atxguy at comcast dot net