I had a shop put in a Flowmaster 70 series and remove the resonator from my Lexie. The stock Y pipe was also eliminated (which is an abomination, extremely restrictive). I had the pipe turned downward just behind the wheel to eliminate the possibility of crushing it. Again. Sounds awesome, no drone, just a mellow reminder that there are eight cylinders under the hood. At freeway speeds it cannot be heard unless I downshift to pass or climb a hill.