Associate
Could put a G10 on it, you keep the backplate on the 6G and the card already has a midplate covering all the vrms. With a H75 and SP120 Quiet Editions push pull never seen it break 55c
To be honest i would rather replace the TIM now and then go full loop when i can get the money together later this year.
EK are making water blocks for the Msi Gaming (and the Gigabyte G1 also) according to one of their reps on another site, to be released later this month or early September.
I am not really a fan of AIO's on a GPU as full blocks just look so much nicer.