LS1 exaust
Cheap, effective, efficient, aggressive-sounding route: SLP Loudmouth, Hooker Headers w/custom Y and ORP <img src="graemlins/gr_devil.gif" border="0" alt="[devil]" /> (didn't look at your profile but lid/filter and better plugs are a must <img src="gr_stretch.gif" border="0"> ).
Expensive, effective (ofcourse <img src="gr_images/icons/wink.gif" border="0"> ), yet mild-sounding route: Corsa exhaust, FLP Headers w/FLP Y and high-flow cats.
Hmm . . . I wonder which route I favor <img src="gr_images/icons/cool.gif" border="0">
Remember, if you plan on going forced induction in the form of T or TT's; headers cannot be used in conjunction with most turbo's offered on the market for the LS1 <img src="gr_sad.gif" border="0">
<img src="images/icons/confused.gif" border="0">

