Ha! Found it! Here's what I did last year. I drove from Maryland to Pennsylvania like this, sometimes hitting 80mph on the highway. Yes, it all stayed in place. Even the cooler. Forgot to mention, I got it all in there with a toolbox in the way. Oh, and there isn't a ton of weight back there. My truck has been lowered 2/4" with a Ground Force kit, so it rides lower all the time.
On your truck, you shouldn't have as much trouble as I did making things fit, since you've got the longer bed. I don't think the trip would be impossible with 3 guys as long as you shift judiciously and you can all get out and stretch every couple hours.
On your truck, you shouldn't have as much trouble as I did making things fit, since you've got the longer bed. I don't think the trip would be impossible with 3 guys as long as you shift judiciously and you can all get out and stretch every couple hours.