To the original poster; I was towing a 7000 pound travel travel with the identical set up as you, except my truck was an 06. You will really need the weight distributing hitch system. I also added an anti sway bar for $60.00 and it was money well spent. I found the whole hitch system on Craigslist for $200.00. Trust me, that's a heavy rig to pull down the road!