I am going to get a conroe E6600 CPU pretty soon and I currently have water cooling on my athlon XP. I want to overclock to 4ghz and since I need to get a new waterblock I wanted to know if there were any other parts I should get to overclock to 4ghz. Currently I have a Pabst 120mm fan that is rated at 56cfm but it seems to be dieing on me so I ordered 2 Mechatronics fans rated at 57cfm and a new case since I needed one. I have a Black Ice pro 120 mm radiator, fill port reservoir, danger den CSP Mag pump, and 3/8id tubing only cooling the cpu. What waterblock do you guys recommend for the CPU and should I consider adding or replacing any other parts to my system?