This seat was designed on a CB360. It will fit bikes of that size, and smaller.
6.5" at the front
7.5" at the widest
21.5" overall length
11.5" seating area
The seat is produced with top quality resins and glass. It comes in a gel coat finish, so no need for any body work prior to paint. Pull it out of the box, hit it with some 400 grit and prime her.