The difference that you will notice is that your truck will keep that fresh, first-drive of the morning type of power longer as opposed to that middle of the afternoon stuck in traffic for a while power. There is definitely a difference...it's just not an increase in your base HP.
With a 180 tstat, you will most likely never see a code (170 is a different story). If you lived in a cold climate, it might be an issue. If you don't have a programmer (e.g. diablo predator) it won't make much of a difference. You need to lower the temperature that your fans activate in order to take advantage of this.
On a down note: In order to flash impurities out of your oil, the engine needs to reach a decently high temperature (~200*) every once in a while, so while the consistent power can be nice, you need that occasional heat to keep your engine in tip top shape.