I removed the EK tri-sli watercooling bridge from the waterblocks and installed the EK GTX Titan X Waterblock with Backplate on the fourth Geforce GTX Titan X.
I then installed two clear EK bridges on the two pair and slapped some Koolance Quick Disconnects all around. It will make removed and installing the cards a bit easier. Switching from SLI, TRI-SLI, 4-way is easy via the mother pci-e lane jumpers and switchin out SLI bridges.
This is no Marc MOLELLA case mod but it works for me.
bridgestwo.jpg