I'm always looking things to make life easier while towing, especially over long distances. My first and most important upgrade to a truck that doesn't have them is good extendable towing mirrors. My most recent and favorite new upgrade is a backup camera. I usually have hitch up to trailers by myself and the camera takes all the guesswork out of it. And at $50 bucks or less on eBay for a decent setup, you cant go wrong. So what does everyone else add to their trucks?