Do any of you guys know if those cherry bomb glasspacks from Kragen or Autozone are any good? How do they compare to the Dynomax Thrush glasspacks from Summitt, Jegs, NOPI, etc.?
I currently have the 28 inch Dynomax Thrush glasspack on my car and its giving me some metallic noise problem that I, nor the muffler shop could figure out so I was thinking that I should replace the one I just got.

I have no CAT, so I'm using the glasspack to quiet the sound down 2.5 inch piping and Magnaflow striaght through muffler.