About to proceed with 6 speed install.

Considering the Jim Berry clutches and want some feedback from those that have them.

I've heard they are a really good unit, but what are the benefits?

Car is mainly used as a track hack with occasional street use when the other car/s are out of action.

Handling 280-300hp.

I know he does an organic clutch and button, which should I go for? (If any)