Try eBay;
http://pages.ebay.com/link/?nav=item...d=290926992857
Or
http://pages.ebay.com/link/?nav=item...d=200769303248
Just two I've found, I've no connection to either, just results from a quick search on there.
I managed to get a bargain off eBay, a 28" D1-8 faceplate for £20, so keep checking!