why not just take the back of and mount it up the other way. then cut out a hole for the pci cards and make a new back plat to mount the cards to. or cut one out of an old case and mount that on the back
yeah i was thinking of doing that. but because mobo is getting mounted sideways anyway, (as it wont fit any other way) there is no need for PCI in back. also fans will provide maximum cooling where they are *considering mobo is on side* even when the water cooling is in place.. i think i will just place rad. there.