Assuming you mean the main low beams, the first and least expensive route would be to get a HID kit. Personally, I would go the extra distance and switch out your projectors to some from an Acura TSX and add in a D2S HID kit.
Us MS6 types do have HIDs, however on the low-beams only. I saw on here someone posted a redo of an MS6 where they had gone an put HIDs also in the fog lights and high beams. Very sweet.
