Hello, anyone made their own exhaust pipes for a 71 Bonneville, I'm going to try and make my own, firstly to get rid of the monster original silencer's ugly things and the breather pipe that runs along the rear mudguard what can be done to get rid of that I have T140 rocker box's 6 bolt inspection cover's is it right I can breath it into the exhaust box and the frame over flow at the head stock?