Would you entertain trades?
I sure would. What did you have in mind?
MSI 970A-G45 which should support the three or four cards max with risers, but I've been using dual GPU midsize ATX rigs.
I'd throw in some WDC ...
... but that's all gone, had to sell out my last 6K at .00011 for some chump change, which sucks. I've been a big proponent of Worldcoin. 
I'm not sure I want to get video cards for them. I sold all my gfx cards. I also have 3x msi 970A mobo's you can buy