back_the_pack,
I don't see why not. Towing capacity on a truck like that should be in excess of 6000 lbs, perhaps 8000 or more. As a comparison, my Chevy half ton 4x4 is rated for 8100 lbs. It tows my Kubota 2910 and a 16' trailer with ease. Although my trailer has no brakes, I would recommend them for an extra margin of safety. If you have little or no towing experience, I would do some trial runs without the tractor in the trailer to get a feel for it. Also, bind the tractor to trailer to keep it in one place, and make sure it is positioned correctly, with enough weight on the tongue to keep the trailer stable, without exceeding the recommendation in your owners manual.
Lastly, and perhaps most importantly, I would get a receiver hitch installed. I would not rely on the bumper.