It looks to me like it has the 850 style seat...I could be wrong though. Does that box even exist at this point, as I haven't had much luck finding it for sale? Supposedly it doesn't fit the new ones, but it possibly could be customized slightly and it would work?
With some luck you could pick up one off eBay. I've seen several over the last few months ranging from $60 to $100
I will definitely pick one up it someone confirms it fits on the 2016 tourings.
I don't know what was Polaris thinking when they decided to discontinue these at: