Seeking if good build

You need to use low profile RAM, like GSKill Ares, Crucial Ballistix Sport, or Corsair CML, to avoid a clash with cooler.
Unless you intend to add a 2nd graphics card, in SLi, you don't need anything like 750w PSU. Even with 2x GTX660 you don't need as much as 750w, although there's nothing wrong with a bit in hand.

i do plan to run two 660s in sli and can support a link to a good ram please  

Why not just get one 680 and avoid SLI altogether?

because 2 660s are better than one 680 and i have always wanted to try sli  

What country are you, any preference for website/supplier?

im from the usa i mostly prefer newegg  

change the mobo to the asrock z77 extreme4 from newegg man, they are giving away free 2x4gb of 1600ghz pc3 12800 SDRAM with the purchase of the mobo at 134.99, everything else looks great, stick with the 750w, thats a good size and particular one, the sli 660's will be good, but maybe look into getting one 680 instead, it is a beast right now and you can always resort to SLI'ing it later on when technology advances instead of having to go to two different cards all together when the 660's become outdated.

EDIT: also that mobo is a beast, definitely the best one for you, on top of that free ram as a perk =)

Link for Crucial Ballistix Sport, as good as any.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If you're going to overclock and overvolt then the Asrock Extreme4 is not a very good motherboard for you.Stick with the MSI one you chose.The Extreme4 is known to have VRM overheating problems.

Certainly, when throwing in 8GB of decent RAM, the Extreme 4 is a good deal. It's obviously a judgement call, whether it's worth paying a premium, for the quality, and BIOS/overclocking ability of the GD65. The GD65 is one I will consider, for an upcoming build.

i have the asrock z77 extreme4 with the 3570k and im pushing 4.9 ghz with it and a water cooling system

i want to do a water cooled system but idk cuz the h100 would be my choice

if you really want to push your cpu then its a must!

what do you mean by push