the resonator i currently installed is a straight pipe maybe 18" or 20" and is smooth on the inside. i was at canadian tire and i took a quick look at a cherry bomb glass pack and its pretty-much the same but the inside walls were meshed rather then smooth.
like this
![Image](http://static.howstuffworks.com/gif/muffler-glasspack.jpg)
if i swapped my resonator with the cherrybomb would it make my exhaust quieter?
on a side note. if i plug one of the tips on my muffler with my hand the car sounds perfect