A few questions on some performance accessories: 1. Would it be a good investment to put the Boyesen quick shot accelerator cover on? I'm going to install the new z-start clutch so I'd like to know if this accelerator cover will work with that. 2. Can someone give me some sound advice on a new pipe and header? I have a white brothers pipe that I'm planning to replace so I'm looking for some recommendations (preferably that won't break the bank). 3. Another Boyesen product: Any feedback on the water pump kit and impellers?