Or you could go with a EK DCP 4.0 (Danger den also has the same pump under the name of CPX PRO) And save some money on the pump. MCP655 was awful for me, it was DOA when I got it and when I got an RMA and used it, I was not impressed by the pump as it was very loud for me and didn't move so much more water than other pumps, so the price really wasn't justified. Just personal experience though, as others have had great times with the pump and reccomend it. I just like the EK DCP 4.0 because it moves a lot of water and is very quiet in my 600t.
Honestly, you can't go wrong with EK watercooling parts, but go with what pump you have your mind set on.