Coffman's Exhaust "DO IT WITH DAN" (DIWD) edition Slip-On Exhaust! To get a "DO IT WITH DAN" edition Coffman's Exhaust system or muffler look up your bike at http://https://coffmansexhaust.com/ and figure out what you need. Then contact Wyatt at (707)-462-7881 or by email at: coffmns@sbcglobal.net and tell him you want it with "DO IT WITH DAN" logo. You can also state "DO IT WITH DAN EDITION" in the notes section of your order!