So me and some friends did this trail and completed the last and main obstacle (the stairs) with nothing more than 3" spacer lift up front and some big tires on my rig. We camped out there and had a blast. I definitely recommend this trail if you dont mind some body damage. Here's a quick vid of the trail run. Still working on editing the video im putting together. Before you run off and do this trail, i must note that I made pretty damn good use of my trailer hitch everywhere so if you don't have a heavy duty bumper or a trailer hitch, expect to lose your back door. Sliders isn't necessary if you got an excellent spotter so tread carefully.
I was warned by other Jeep guys that this trail would be too difficult for my "stock" truck and to not attempt it. I was pretty stoked at how easy this trail is, especially compared to the videos you see on youtube of other people struggling to climb the stairs. Unless you're a Jeep guy, you don't need a hugely modified truck to do this, just great wheelbase, awesome spotter and a shit load of confidence.