I have 2x 5970s I could sell you but they are ATI (OEM). Personally I think that is a non-issue. I have 18+ running w/o a problem. I can get you 2x ATI brand 5970s tested for $780 + S&H.
If you are set on them being "non-OEM" I will have a friend (gamer not miner) w/ a pair of XFX 5970s that is looking to unload once the 6990s he just bought arrive. Once I test them I could sell them to you for $800 + S&H. Full disclosure since I don't care about OEM vs brand I will be selling these to you just to buy 2 OEM for cheaper and pocket the difference.
Only bad news is it will take a couple days before I have them. If you haven't found anything better, I should have them ready to ship by next Wed at the latest.