I have owned two of the NPRs , Wonderful , trouble free trucks ! I pulled a 20 foot trailer behind a 14 foot box . 150 thousand miles on each ! For me they would be a good choice to pull a camper trailer . Mine were governed at 64 MPH , no problem for me ! Going up a hill I would fall in with the tractor trailer crowd , no problem for me .My mileage was in the 11 MPG .The ride was OK by me . Turn on a dime and give change ! I also had several of the UD trucks , same opinion !Not fast , but who wants to pay for fast when you are camping ?