Hi everyone, I am new to the sight and need some experienced input on porting and cleanup on my C6AER heads mostly on the exhaust. Are the humps in the lower corners there for a reason to add velocity, or are they a hinderance to flow? I know the upper thermatacor humps are a hinderance but how much can they ground away. Just concerned if any possibility of running into water jackets...….so I have been told. Intake info also appreciated Thanks......