In short, I know that way back there was a kit from Koolance to help liquid cool a PS3 phat. It obviously required some case mod work, such as opening the grille to allow the tubes to go through to the blocks, but it was possible, and their work re-used the factory bolts and stuff to mount the blocks on. That being said, sadly I only found out about this way too late, as of course the Koolance kit is discontinued/EOL'd out. But that being said, would it even be possible to liquid cool one if you wanted to now? It might be a helluva stretch, but I think it'd be awesome if it were possible to even put the kit all within the empty space that would be there from removing the ginormous heatsink. At this point I'd just as settle for finding the block/mounting kit that would at least allow using an off-the-shelf rad/res/pump kit, so long as it fits the PS3 proper. console weight be damned, as long as it manages to work and cool the thing.