Well it is not a very clean setup yet because 1: they are not sitting at the spot they will be running at and 2: they are not bouncing yet....
For the rack I used a shoe rack that had 25 places. I removed every other horizontal shelf so that there would be enough room to mount them. And the distance from HSF to the board is about 1/2.... For this reason I plan to mount fans pushing air from the rear to the front...
From this picture it is hard to see how I mounted the mobos to the rack. I purchased a 1/16 drill bit and created a hole layout with some paper then transferred to hole layout to each location I wanted to mount a mobo... Drilled the holes and used small wood screws to mount them without going thru to the other side...
Once cleaned up this will look great....