Chemist.....Can you post a sound byte? I'm REAL interested to hear what you can get out of a 4-banger with headers. I'm hopeful it would sound better than a Fart Pipe a sixteen year-old would throw on his Civic, which would probably not be apropos for a 47 year-old guy in a Solstice! I would be REAL impressed if the headers produced a nice 'throaty' rumble. PLEASE post if possible.........I know there will be at least one smart%&@ that will post " VRUUUMMM RUUUUUM VROOOOOMMMMMMM"