I have been trying to make an exhaust system. out of an atv chamber. the pipe i used was slightly larger. my friends pipe bender made a mess of it. I have decided to push on and make the system and then once made. I will take it to a professional and have it remade now I have a template It looks kind of cool in a ratty way. I had to redesign the tensioner and modify the manifold to take the flat slide carby fit. Long way to go. Here is my progress