Which slocket for a Soyo 6be+ board?

[chemwiz]

I need a slocket for a Soyo 6be+ board, I have a customer who wants to try out overclocking! I haven't seen the board yet, does it support changing the voltage settings? Or do I need a slocket that will do it? Which one should I get, and where? I want to put in a celery 600@900, but the one I have needs 1.8v to run stable