Looking at all of these pictures of what looks like sweet systems, I'm curious. If an X-pipe was installed after the flex pipes instead of a muffler, this being a 3" system. Then after the X add a megaphone that goes from 3" to 4" with a fast taper back to 3" then out to the axel back part of the system...I'm only thinking of note cancelation and flow, with a lean towards exhaust note, if we are looking for less/no drown and awesome flow. Does anyone have experience with megaphones inline in their exhaust systems?