I just installed the H110i GTX in my Phantom 410 case. The holes do NOT line up correctly, so here's how I did it.
I put the two fans inside and screwed them from the top with flat headed screws. Then I used TWO of the fan holes to use long screws and went through two holes that did line up, and into the Radiator. That secured the radiator well enough, and the fans were good to go.
I had to take off the top panel bracket (usb ports, fan switch, audio ports) and put it back on after mounting the radiator. The radiator is pushing into this bracket a bit and the circuit board underneath. But I put some electrical tape between them to isolate any contact and it seems just fine.
Lastly, the top cover will not fit without some modifications. You'll need to take out one of the rear screws and remove the plastic "nub" that it screwed through. As well, there are several other little plastic nubs (unused) that you will need to remove/dremmel out. On the right side, I had to remove a bit of the grill plastic to get the cover to close completely. Not a big deal, but you'll need to work it a few times, dremmel then test.
So worth it. My computer is whisper quiet now (Maximus Hero VIII with 6700k) even at full load. Upper 60's Celsius average at about 4.6 ghz overclock. I'm going to push it a bit further with the bios settings.....the ASUS and Intel tools do funky things when I use them and produce unreliable setups.
I started with a Coolermaster EVO 212 for this (first time ever) build, and decided I didn't want to hear any fans......so swapped out for the H110i GTX.
Hope this helps someone. Here's a link to a picture.
http://1drv.ms/1QRKXUN