Its a D44. The R&P is under full warranty and if it breaks then it just gives me something to fix, thats what wheeling is about. I wheel with 36" swampers and i run 37"km2's on the road which is maybe once a month when i drive it. Warn hubs won't guarantee breakage before the R&P, I run rubi air lockers and harldey ever need to use them so that is highly unlikely to break the teeth of the ring gear with an open diff. But theres always a first for everything!
What you missed in this is explaining this more---
Stock rubi lockers will explode before you break the R&P. So if you happen to be wheeling it and you break a locker it then goes open and you still get home. Problem solved.