Water cooling on the cheap - what to buy?

You feel that $250 or more for a kit is too much. Can you water cool a CPU for much less? I personally like the F-150 cores as they are thick and big. This allows you to mount either a huge fan or two large fans on the core to move air. Water flow through this core is very free flowing also. If you get a prebuilt heater core, try to get a naked core unless you need a good looking radiator rather than an efficient one. You can get a Swiftech MCR120 Quiet Power Radiator for as little as $29 - a fairly good radiator.