BE Aware. I did not measure 21 mm between the sr1 and the midplate. I measured 19 mm months ago when I was working on this. So even if you assembled unit (pass through + bitspower smallest 90 degress) give you 21 you will be still short by 2 mm. So you might have to drill the rad/mount to fix it a little lower in order to have 21mm clearance.
Also be aware. The sr-1 use 20 mm fan spacing and the SMA8 bracket is made for 15 mm fan spacing. The sr2 is already fixed with a normal 15 mm fan spacing. So if you go the sr1 route you will need to mod the mount/radiator drill holes.
Edited by Gabrielzm - 7/23/15 at 5:01pm