Nitro are china made now. I just replaced my front 5.29 with Revolution gears. ordered from Cruiser Outfitters.
Also be ready to buy a new pinion flange as they upgraded from 27 spline to 29.
I don't thing the ring gear would brake when in park and winching.
Broken teeth don't usually make a clunking sound ether.
At least not in my experiences.....
finished putting my LX450 back together. cleaned up the garage. helped a buddy with his axle upgrades. got my brothers truck back into my garage to finish his rear full float conversion, disk brake conversion.
You'll be fine. Leave the hubs locked, and use it accordingly.
I'm happy i have the PT. I broke my front Ring and Pinion out snow wheeling, Unlocked the hubs, CDL off and drove her home with no issues.