Why would you have to break stuff to deal with rock bigger that 2'? It's true that things can be broken, some seem to enjoy it. The key is getting seat time, learning the truck, pretty quick rocks are not as scary as some like to promote and are a fun driving skill. Most breakage is from poor driving, inexperience, pushing the rig places it shouldn't be, etc. Step up challenge levels incrementally, as you start to understand and most of it can be avoided.
Put the 37"s on mine in 2007, so over 160K miles ago, have done over 100 trail days in most years, Because of what we do, often don't know what kind of trail we will find, so have done lots of rock play. All of the axles are stock, recently one birf started slightly clicking, so swapped it for a used spare. The right knuckle has been apart twice, one stud problem and then the clicking birf, the left side got birf soup at ~200K mi, so resealed. Nether diff has been out, most of the drive line parts are how they came from the factory. For the amount of wheeling abuse it has suffered. it has been amazingly solid and reliable.
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