I searched the threads, the Internet and could not find an answer. Need to know if cylinders are interchangeable between 2000-2002 "325cc" model if the rocker boxs are different. I have a breather box on top of mine rocker box (2002 Trail Boss) but found a used cylinder head with a rocker box without the breather, just a "normal" looking rocker box. Can I used just the cylinder head and put my rocker box on it?