I took my stocker to Moab this year for the 1st time, only changes I had made were replacing OEM shocks, putting RanchoXL's on, transfer case skid plate and 255/55/18 tires. No lift, no TB cranks. I did scrape the front & rear lowest part of the cladding (not visible at normal view), and bent the OEM tailpipe a little. I did 2 trails (Fins & Things and Hell's Revenge) which are both rated as "difficult", and had no problems. I did pass on trails that had larger rocks/shelfs because of my stock height and my desire to not rip the heck out of my undercarriage.
Checkout my gallery for many pics of several different off road terrains/locations I've been, maybe you can use them to gauge the terrains your stocker can EASILY handle. Note, I have gotten bigger tires since Moab...I got Cooper Zeon LTZs in 285/60-18, with more aggressive tread, I gained 1.21" in height with just this tire change, so next yr in Moab I'll have even more fun!