Engine work for my softail deuce
 

I was wondering what I should do to to beef up my engine. I have a 2006 softail deuce. It is all custom except for the engine. I have the Martin brothers medusa pipes and a screaming eagle air filter. I wanna get more performance. Someone told me about the CVO kit for my bike. Others told me to replace the cams and carburetor. Any ideas? Thanks!