'13 Ram 2500 - how much lift and pull 5th wheel?

If you are buying a new 5th wheel I believe you will have options. Be careful if your are looking used. Mine is 8 years old and no way it could be towed level behind a newer truck let alone slightly lifted. Trailer lifting options are not there for my particular unit. I suggest picking out the trailer you want, get out a tape measure, then decide on tire/lifting options. I didn't do it but I got lucky because I had an older truck.