look again - it'll be even harder getting that antec inside that case - where'll you mount it? I asked cos I was a big fan of that case until my heart dropped from a mile away after hearing of its retail price.
I saw someone on the EVGA forums who had a Kuhler 920 on their i7-3960x but they haven't responded to my PMs.
well it could be that it didn't work for him and BTW the AIO coolers are having an issue QC wise - so I'd sit the closed loop cooler out.
* IF you read the watercooling sticky in my sig - pop by the closed loop cooelr subsection adn you'll understand why I'm using a discouraging tone about those CLC's.