My mufflers were in need of replacement, however, the headers were in good shape.  So here is what I did


First of all I decided on a set of fishtail mufflers.  I took mine off and cut the old mufflers off as close to the rear as I could. 

These are what I had on (of course these are new)


I then welded another pipe to it, one of about 5" long and the proper diameter so that the new fishtails would fit over it.

View of header installed on engine

Fishtail installed

Now these are removable and I don't have to buy a new set of headers as long as these are ok.  Can also change mufflers whenever I want.