Interesting eBay item. A custom MX650.
https://www.ebay.com/itm/1974-Yamaha-XS/223942653434?_mwBanner=1&ul_ref=https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F223942653434&rvr_id=0&rvr_ts=18ae20331710ad394db39236ff9e4a62&ul_noapp=true&pageci=fc9428d9-2b1f-4141-9a3e-4828a2835fb3
That bike has a ton of work done on it, I remember seeing that on YouTube before, I remember that crazy exhaust.
He loves to talk about it but never starts it up!