I am looking for a new to me 5th wheel. I have a 2007 2500HD 4x4 w/6.0 and 4:10 gears with 6L90E trans. I will have the mountains to contend with at times and am concerned with total weight of the 5th wheel. I have been looking at trailers with UVW of 8,000 pounds. Not having pulled a 5th wheel before, I thought I would enlist those of you who have and the results you have found. Thanks in advace.....