There are some fun off trail/optional stuff but the main trail is not to bad. Qith the right lines through the rocky river a near stock VX (offroad tires/skidplates recommended)) could make it through. Here is a trip report from a previous trip VCamilo and I took through a few years back (unfortunately the pic links look to be dead). The BLM has actually made the trail easier since they bulldozed one of them obstacles