The 85 GN I just bought needs a muffler. Its only got 25K miles and the original is blown out. I need one that doesn`t have a roar but I do like to hear whats going on, Any suggestions has to what some others are using. Also the black paint/coating is coming off of the tail pipes, any ideas. I assume some black heat paint but I`m just checking to see if there are any other ideas. Thanks Dale