Wanna take my 6800u north of 500 on the core

[chucky_d]

I have a vapo lightspeed but cant find a block for it as im sure nobody makes one. I can already bench at 470/1.25 on the stock air (gets hot though). Could i piece together a water kit good enough to get 500 on the core? Or would phase change be the only option? And if vapo is the only option how would i go about putting the lightspeed on the gpu outside of a risky ghetto homemade hackjob block.