Commodore 670 Allrounder- Trim Tabs

 Hi All,

I own a Commodore 670 and I"m planning on having trim tabs installed. Does anybody know of someone who has added tabs to this model of boat? I've seen a few 670's around but haven't seen any with trim tabs on them.

Just wondering what type of tabs others may have used and also after comments on what performance improvements can be expected. 

Cheers