Yeah man, you would need a resonator if you wanna keep your teeth! I mean im getting old, ( ) and just couldnt handle the volume. It sounded bloody awesome tho, with the most killer overrun, but not for a daily. I was willing to reduce total flow and put the torpedo back in, thus loosing some added power too, to keep the sound where i wanted it.
You can hear my setup here:
http://s808.photobucket.com/albums/zz8/dutchie10101/?action=view¤t=ZREexhaustnote.mp4
Maybe opt for the axle back first, then do the rest of the system as you see fit in time. Just a suggestion B)