![Sad :(](./images/smilies/icon_sad.gif)
Just remember, you get what you pay for. Spend a little money and get something nice. If you get something off of ebay, it's going to be stuffed with that steel wool sponge crap that's going to "absorb vibrations".
cheap. air doesn't flow as well in those types of exhaust, since it flows through all the fibers, instead of flowing straight out.
You won't notice any "quieter" difference in yours and those mufflers, I'm pretty darn sure