As the owner of an i5 Mac mini, a Cube hack, and a spare cube I am very interested to see how this works out. I know that the whole thing won't fit in there the way Minihack's old Mac mini did, but I think the board is too big as well. Angling it could work, but despite the fact that you rarely see the bottom I would still know that it was all caddywampus down there. Look forward to seeing you work