It's not about a list of parts TBH.
It is a list of minimum you would need and recommended specification.
As you will be going though 2 blocks you will want 500+ lt/hour pump.
Now you are more than likely going to be over clocking?
So maybe a dual rad is required? You will have to wait for Tom to say what you will need as he is the Guru.
More likely going to have a single if you are dedicating it to your GPUs and not overclocking... IDK
You will wan't some descent blocks, I don't or have not WCed a GPU yet so I can't say much but as ever the better one is most of the time the expensive one. Get a branded one, XSPC have a big range but probably not a 570s as they are model specific.
A German company Aquacomputers, have made a block that "fully fits" the 570.
Might be worth checking them out.
As I said, I am new to water cooling graphic cards so don't take my advise to seriously.
Well I hope I helped.