Hi, I was wondering if it's possible to recover and add more foam to the stock seat for two people ? Maybe there's a way to add a litlle backrest for the passenger too, converting it like the touring seat ? I must not be the only one to wonder if it's possible. If someone have done it, I would like to see pictures please. I know that buyjng a new seat is more simple but I was just wondering if it can be done. Thanks !