I stumbled across this very radical build pic on a message board. It was billed as an XS650 based custom. I’m not so sure though. Either way there’s a LOT of love in this build. There is no other info available. If anyone can fill us in it’d be much appreiated.
Motorcycle Photo Of The Day 
I’m no expert but that certainly looks like an XS engine sidecover to me. What makes you doubt?
WOW.
Yes it is xs650; being built in Melbourne Australia see its build on xs650 club Australia.com.au -GUD