I recently bought a used MacPro that was damaged in shipping (badly - won't stand up straight). It's a 2009 MacPro that's been upgraded with the 2010 6 core 3.33Ghz processor. First of all I think this would be my safest bet, which isn't too bad at $251 shipped for a new case: http://www.macpartsonline.com/922-8890-enclosure-mac-pro-early-2009-a1289.html Now I'm just looking on eBay for a possible cheaper solution. Something like this. I haven't been able to find out for sure yet, but I think that model number (620-3970) refers to the 2008 Mac Pro. If so, would my 4,1 -> 5,1 fit into that case without any problems? From the pictures everything looks to be in the same place but didn't know if there were other things to consider. Thanks for the input!