[suburban99]

Back in the day I worked for a department store up here in BC doing heavy goods delivery. We had a few 1968 GMC's with the 2 speed rear end. The trucks all had 24' boxes and power tailgates. We loaded those trucks with furniture and headed out. We have some pretty steep terrain here in Vancouver area, North Vancouver and Up towards whistler. Those trucks were geared well and although they slowed on the hills they went to work everyday.. i would build your RV as is and see what it is like. You can always swap out the engine later as the cab tilts to allow access..