Brawler seat & fender rack
 

Can anyone tell me how these two parts (56452-07 & 51393-06A) are mounted to the fender. Is there a mounting hole under the original seat? Do they use the same hole? It looks like they are held onto the fender with a thumb screw. My thinking is I wanna use the Brawler seat for short cruises and the rack with the original seat for longer trips. Is this doable?