Zuhl3156
OK, I found an answer courtesy of the Guru3D review as far as SLI bridges are concerned...
 
"Beginning with NVIDIA Pascal GPUs, the two interfaces are now linked together to improve bandwidth between GPUs. This new dual-link SLI mode allows both SLI interfaces to be used in tandem to feed one Hi-res display or multiple displays for NVIDIA Surround. Dual-link SLI mode is supported with a new SLI Bridge called SLI HB. The bridge facilitates high-speed data transfer between GPUs, connecting both SLI interfaces, and is the best way to achieve full SLI clock speeds with GeForce GTX 1080 GPUs running in SLI. The GeForce GTX 1080 is also compatible with legacy SLI bridges; however, the GPU will be limited to the maximum speed of the bridge being used. Using this new SLI HB Bridge, GeForce GTX 1080’s new SLI interface runs at 650 MHz, compared to 400 MHz in previous GeForce GPUs using legacy SLI bridges. Where possible though, older SLI Bridges will also get a speed boost when used with Pascal. Specifically, custom bridges that include LED lighting will now operate at up to 650 MHz when used with GTX 1080, taking advantage of Pascal’s higher speed IO. "

koshelkov
And here is what I did with Nvidia HB Sli Bridge and EK Waterblock: 

I just simply unscrewed bridge and cut pointy parts:

And used double side taped the cap back to the base:

It is little bit getto, but it works (including LED) :) Plus I use Cosmos II Case, you don't really see these things.

koshelkov
And here is what I did with Nvidia HB Sli Bridge and EK Waterblock: 

I just simply unscrewed bridge and cut pointy parts:

And used double side taped the cap back to the base:

It is little bit getto, but it works (including LED) :) Plus I use Cosmos II Case, you don't really see these things.