I, like you, want to do this (although not on this bike) and want to keep the aero look. My 93 rear lower fairing though is metal. So, may I suggest you make your undercan WITH lower fairing built in/on in metal. No plastic to burn.
Larry
VFRrider
That muffler is in Canada complete with the headers. I retrieved it from the crashed bike & sent it to Canadian Ken (?) who gave it as a gift to someone who liked the idea. Instead of simply bolting it onto his bike he decided against the idea & it is either wasting its time in his den or has been thrown out.
This should make you lot smile. I have now downscaled to a single 200cc cylinder = 1/4 of a VFR.
Where I now go. I also do multi day solo trips on very deserted gravel roads in the boondocks.