I note there is already a heatsink on there... would you bother sinking the caps?
And what is that black thing in the middle of the caps??
@Agaeris - You may have just sparked a frenzy of new mods
I think the black thing is prolly a bearing or casing holding the top end of the pump or rotor assy.
Look back to the OP for the tubing mods, they show which two screws to remove to get cover off