i know the motorcycle you are talking about (not by name)
my concern would be that it would create too much backpressure, at least on larger engines. a V8 needs to spit out a lot more hot air than a V-twin.
the closest i can think of is the bowtie exhaust (which i think is ugly personally) where the tip of the exhaust is bent into a Chevy bowtie. other than that i've never seen the actual exhaust tip bend into anything.
you want "stealth" exhaust? dump it.
note: the " " not being a jerk and correcting spelling, but cause if you dump your exhaust there will be nothing stealth about it audibly