Muffler replacement, contrary to popular belief, does NOTHING for performance on these cars.
If you need to make any one change to the exhaust, it is to the cat converter. Over time, they become restrictive. After that is done, work on the exhaust manifolds. Is your front exhaust manifold cracked? That'* a big pain in our necks...not only does it create a little noise, it also induces KR...false KR at that...which in turn, cuts power.
Now...see what I am getting at? Money on a muffler, unless you WANT more noise, or actually needed to be replaced, is wasted money. That same money is better spent on, ahem, maintainence and upkeep of what you already have. That'* my fi-low-sof-eee anyways.
Welcome, downwardly mobile yuppies, to the dawn of the Age of Nefarious.
1993 SSEi - FrankenJinx - dead and gone.
1994 SSE (136K strong) - 180* t-stat,HD alternator, most unequipped SSE on the club, XM radio, Kenwood CD/MP3.
2006 Chevy Malibu Maxx LTZ - Custom 2.25" manifold-back exhaust w/FM-80. Probably the only Maxx with this system.