Why isnt there a sub 20 lb sport/racing muffler, that makes better than stock HP for around $400 to $500?  Am I expecting too much?
I dont care about booming or droning sounds, just a muffler for my track and AX car that sheds some weight and doesnt lose HP over stock.  
Everytime I look I find lightweight boxster mufflers they are a bazillion dollars?  If some enterprizing Chinese factory can make lightweight stainless steel 986 headers for $99 why no cheapo lightweight mufflers? 
