I found this
modded GZ250 on Ebay. Check out the seat and rear fender closely :2tup:
I emailed the owner asking what mods he had done to it. The rear fender is a West Coast Choppers Jesse James fender and the seat is a new Harley Sportster seat.
I am awaiting an answer on what modifications he done to it to get that seat mounted. I will post what i find out.