I am trying to figure out what the bed height, from the ground to top of bed/tailgate of a 2500 4x4 is. Want to know both for a Goose-neck hitch as well as lift over to put stuff into the back of the truck so obviously looking for height with tailgate down at bed level. It isn't a published measurement I can find and there are no 2500s handy on the local lots so was hoping someone with one would be kind enough to measure that for me. Thanks.