You can use a single sided exhaust, but not without fabrication/modification. There is no bolt-on side exhaust. The outlet from the catalytic convert exits towards the center rear. Also, the catalytic converter has an O2 sensor that the ECM requires.
I’ve heard/read that people have used an R6 exhaust. You might find details with a search on this forum.
Quick update.... I performed Final impacts trigger wheel modification. Following his guide and measurements I advanced 5°. I also has some time to fabricate a muffler bracket. Made from 2mm stainless steel. Will have it powder coated black along with a few other brackets. Next on the list is a...