LOL, i too was missing a gasket, but i got an extra nut and bolt...so w/e.
Yeah sound is sweet...not loud enough for my wife to know what i did, but loud enough that i know what i did,
I have a bit of a rattle, i remember something had to come off, but i couldn't remember what at the time i was putting it on, now i know, so ill be putting the car back in the air to fix that.
Thanks for a great CBE at an Awesome price.