Pretty sure these are the Fuji exhausts, I know these are prone to cracking apart due to the way they mount, so Might be a good purchase if you have one of these style bikes...BTW I'm not 100% so do your research that they are for sure fuji muffs (they sure look like it).
Vintage Scooter Generator Small Motor Mufflers Briggs and Stratton Hit and Miss | eBay
Vintage Scooter Generator Small Motor Mufflers Briggs and Stratton Hit and Miss | eBay