> I recently purchased and will install this weekend the S&S header for my
> 1.9l wbx. Looking for muffler recommendations that have a nice throaty
> sound.

If you are buying a "new in the box" S&S Header I am fairly sure that they are packed with a muffler but not with a cataytic converter.  I know the one I bought from CIP a few years ago came that way. YMMV.
George
'85 Westfalia (with a 1.9 wbx and an S&S header)