Sportsman L&R Rear Cargo Box #2875176

Can anyone confirm if this box will fit my 2015 Sportsman 850 SP?? Polaris says no but I found a youtube video showing it fitting a 850sp. I’ve been searching but cant find much info saying it fits on with just the lock and ride without any modifications. Any Help would be appreciated I don’t want to go waste 220 bucks on something that does not fit.

Steve

. Steve