[rattlsnak]

yes you can. It is called a Fister mod or gundo hack. Quite common and two ways to do it. Not exactly the way you mention it being done, but these are very common mods.

http://imganuncios.mitula.net/99_02_porsche_911_996_genuine_exhaust_muffler_w_fi ster_d_gundo_hack_mod_99433901812779210.jpg

http://forums.pelicanparts.com/uploads18/pse%2Bmod21299646615.jpg

The first way is the preferred way now.