the only one that gives me shivers is route 12 from Torrey to Escalante.
but I admit to having a fear of heights if I am close to the edge and looking over, and going south, I, the passenger, am definitely on the outside edge looking over. So I flat refuse to do it in the MH. in the toad, DH takes the middle of the road.
This hogback or ridgeback section is only two or three blocks long, but that's too long for me. :)
So I'll let you decide.
The rest of the road has some pretty good ups and downs, but there are places to pull over and rest, etc. lots of people take their big 5th wheels and MHs over this road.