i have a "bypass" muffler on my 2000 2.7L. i think it soundspretty good.
i haven't taken any really good video yet - but I loaed one to youtube.
http://www.youtube.com/watch?v=sRdAjOpz3kg
i tried to get a sound of the exhaust as it took off on the freeway, but too muich wind noise.
i have some other videos but they are in .mov format and I haven't bought software yet that will convert them into mpg.