RZR 800 Best Option For Rear Differential

Alright starting to get fed up with these 800s, we have had a lot of issues (including diff) with the older model 800s so thats why we got a 2011, well we’ve had issue after issue with it too…. Anyway we were riding in WV easy down a dirt road and the rear diff literally exploded/locked up. Sooo it is completely unusable, what is the best option for a 2011 50 inch rear diff that requires little to no mods. I already know the best option for the front after round three with a 2009.