Drive that route and you will agree that it is the most scenic drive you ever had. The Hogback is only a half mile long and was nothing IMO. Boulder mountain pass was around 8600 feet if I remember right. All types of Rv's drive this stretch every day for much of year. It is a pretty good pull to the top of the mountain, but Torrey is around 7000 ft so not as long downhill. If you have time, drive your toad to the Burr Trail road all the way to the end. Spectacular. The drive over is the hillyist (not including the drive up the mountain which is just grade-8% with no tight turns) and curvyist part of 12 so it will give you an idea whether you want to drive the MH.