I have 95 PSD, i went to death valley over the holidays and my driveshaft broke off lol. I would chk that, i have about 225k miles on mine. i was able to get home by putting it 4x4 using the front wheels. Also, I too have a rack, i mounted in my bed and also wanted to put it on the roof, but i didn't think twice about ditching the rack completely when i came across a great deal on a pop up camper. i wanted to build a camper too but its so much work and no play.