Im not sure what hells revenge is rated but you can easily do it in your rig. There are obsticals that might be more than you were looking for but you can bypass. Its like nothing youve ever seen. I would recomend it. The Lions Back is right next to the entrance of Hells Revenge, even if you dont want to do it its worth driving up to the base of it an looking at it. If I were you Id drive up it. Your long, low, and locked in the rear. A perfect setup for Lions back. Also potato salad hill is right next to Lions Back too. I would be careful with this one, its not as easy as it looks. its like driving on marbles uphill. This is good for one days entertainment.
For the second day I would take the Poison Spider. It connects with the Golden Spike trail later on. Poison Spider is pretty mild but beautiful. If you venture onto the Golden Spike you may have to turn around at the Golden Crack :-/ Without a front locker this would be pretty tough to do, However I saw a stock tracker throw his spaer tire in the crack sideways and drive right through. I wouldnt recomend Crossing with out anyone there to pull you back through if things went wrong. If your lucky youll find some one to tag allong with you in town or on the trail. I wouldnt let this deture you from trying the trail. Its Extremely beautiful, one of my favorites. You could drive to the crack, turn around, and be back out in a day. Id start at sun up since the days are getting shorter.
I wish I could join you,Good luck, and most importantly have fun
Mike