Thanks will have a look at that radiator, I currently have an xspc thin one(can't remember the model, not their thicker ones that came later).
The loop will be for a 4770k with a 290x(May add a second if I get around to it) in a 750d case, will a single radiator be fine?
In a 750d a nemesis GTX 360 would handle your setup well and provide epic cooling