If I do the mystery mod, install a sho y-pipe wiyh a high flow cat, should I install an aftermarket resonator? I don't want the dreaded drone!! I've heard with the y-pipe and a high flow cat, you can do away with the resonator altogther and still have a good sound. Does anyone know for sure? PLEASE HELP!! I am supposed to order this stuff on monday. THANKS, Thom