That's a pretty cool looking conversion but obviously involved because the whole back end has been transformed, including to a single-sided swingarm. I wonder what the left side of the bike looks like, the muffler/canister arrangement?
I found many pics of the above bike on the Arete Americana website but didn't see any photos of the muffler/canisters detailed. Doesn't appear there is a bulky lump sticking out which means the exhaust and connections appear to be well hidden from view. The more I see the more I like this conversion, however, it looks expensive.