You will need a good weight distributing hitch with sway control, like an Andersen or Equalizer. The tongue weight of your trailer should be 10-15% of the loaded weight, for stable towing. The weight distribution will remove some of that tongue weight from the hitch receiver/rear axle, and...
My understanding is that a tow package includes an auxiliary transmission cooler. The 2003 I had, you could see the auxiliary cooler to the lower left of the main radiator, up front. It looks like a baby radiator, maybe without fins.
I don't know if they are so readily visible on the current...