This (14-0808) is the system I bought and the place where I bought it.
Trust me ... spend a few bucks on your hitch system. The thing you don't want to happen is to get your rig trashed because of a cross wind or a shifted load.
And, if I might interject another piece of advice ... carry more than 1 spare tire and make damned sure your jack will lift the trailer LOADED. Don't ask me how I know this ...