Greg wrote on 05/28/12 at 11:14:19:Thanks! That makes sense to me! No adapter just slits in the HD muffler and a Harley clamp.
not trying to hi jack your thread here but I have been STRUGGLING for literally over a month trying to find a way to put my dyna muffler on my stock header with out any leaks. Its really cut into riding season. i have bought an assortment of adaptors from local stores and NOTHING has made a good seal all of them leak. at this point im tempted to weld the darn thing on!

did you put any type of gasket or sealer on? does your joint leak?

i cant imagine it being that simple.