But.... if it is a research project you can check out my work here... http://hardcoreforensics.com At least at the end of it you will have a scrap board that has a significant amount of memory, PSU's and a PCI interface...
Did you ever look at the Pano Logic G2 modules? http://www.ebay.com/itm/200880792833 The G2 version have Spartan6 LX150 in them, would have been cool to do something about it, I have one, and will read your project to see if I can learn something.