i just bought chewys muffler and i was wondering everyone who has the sport type bumper like me , is it necessary to cut the bumper like i have seen in the past or if i put it underneath it will it be too low.....i would appriciate pictures if you have them and would like to know how you cut them if you did...i was thinking of using a jig that i would make and use a router to cut it since since the router would give a flawless cut...using a airsaw might make it look bad....