Exhaust(ing) question

[Oldlbc@aol.com]

OK, it was a cheap pun.  Anyway, here is what  I would like suggestions 
concerning.  I would like to replace the muffler  that is currently on my car 
(71 
Mk 4) with something that is quieter, yet still  allows good exhaust flow with 
a mimimum of back pressure.  I would like to  retain the headers on it.  Also, 
when the engine was rebuilt, it was bored  out, & a Weber DGV installed.  Any 
suggestions?
 
TIA
 
Andy Henderson