Wow!
That TSUKIGI unit looks like it's all business!
It is also a ticket waiting to happen! Here in Seattle and in a lot of other locations, the police are really cracking down on "equipment violations." They're not going so far as to look for the EPA stampings on factory mufflers, but it will eventually come to that if the Harley "Loud pipes save lives" idiots keep running straight pipes and alienating the general population. I love healthy sounding exhausts as much as the next guy, but the police are under tons of public pressure to MAKE us quieten things down.
If your police are more tolerant/flexible, more power to you. The rest of us can only look at stubby exhausts on 175 hp motors and sigh in jealousy...