Up until 2015, Kawasaki made an accessory backrest (pn k53020-396) for the driver for Voyagers. After that, it is no longer listed. I understand that the stock seat was upgraded somewhat in 2016. My question is does anyone know if the backrest will work on 2016 up and what mods are required to make it work? I can fabricate brackets etc, just don't want to purchase it it's completely unusable. Thanks in advance.