I think it would, since it appears to have a "universal" mount. Without dimensional drawings, though, it's impossible to tell. It could be that those arms would run into some other components on the board or something. Have you seen a drawing of it with dimensions anywhere? Or do you have one that you could measure on hand? If it's helpful, we do have some drawings of the X6500, including a Google Sketchup file, at http://fpgamining.com/documentation/hardware/drawings.