Originally Posted by 00CivicSleeper
ok, my resonator i have on now is 15".... what size would give me a deeper tone?
hurleyguy: is the thrush glasspack a muffler or is it to put in place of a resonator?
so if i were to get a longer resonator... it will hurt my performance

I make 390 whp with a foot long resonator on FI (which more restriction is bad for). A couple inches longer resonator will not make a difference, especially on a moderately revving N/A car. Just put the silencer in... why are you opposed to that?