Yes they are stock, and obviously not "kaboom" if its been on tons of trips, rock piles, snow, hills, mud, and sand.
(btw, if you haven't already heard or read, the axle shafts in the JK's are 32 spline, and when compared to my dana 60, 32 splines, they were the same diameter. They are THAT much better.
It's somewhat of a modified 4" lift, to more like a 6.5 in the front, and 4 in the rear. the 38.5 are ok, but honestly, it still needs gearing badly (gears will start shipping in Feb.) Exo cage is made from 1.5" DOM .120 wall, and the stinger is 1.75" DOM 1.50 wall. Bumbers were all hand made. i honestly think the U-joint is gonna be the first to go, but like you, I'm amazed everytime I take it out, or see action pictures of someone elses, and it didn't brake!
As far as hydro assist, I've learned to deal with it since in CA here, it is not street legal. But with the proper use of the front lockers, the wheel can be relatively easy to manuever.
07 JK Rubi 4DR, Rescue Green, 38.5 Swampers, Exo-Cage, Modified K&N, Glasspack, modified 4" Skyjacker
2002 TJ Rock Crawler (sold to Adam)
Fill width Dana 60's Detroits 5.38 full floater
Poison Spyder cage, exo cage, 40" Swampers