3 weeks ago, I bought my 06 LLY, LT. 4 door, crew cab, 4x4. It had a tuner, trailer brake, some type of rims, over sized tires (275's,) and 95k miles. I bought it from a dealer, and paid 25k for it.
I don't think the dealer liked me, everything that was a selling point for him was things I didn't want. When looking, and when I called him, I told him I wanted something 100% unmolested. No lift at all, no offroad tires. I was looking for something I can tow with, and that will be as reliable as possible.
If you try to sell, you will have to see what people are looking for in your area, someone like me would be skeptic of those mods. Yes, I would want them on my truck after the fact, but if it comes with power mods, I would wonder how hard the truck was pressed. Ever see a cregslist add for a mustang or other teen magnet forsale listed as never raced, and there is a picture doing a burnout at a strip?
So it comes down to what people in your area are looking for. If someone is looking for something as stock as possible, like I was, you would have a hard time getting what you want. You would have to make me want to buy it. But if there is some 16 year old kid who wants a truck, and likes yours the best, you might be able to name your price. I suggest looking at used inventory via dealerships in your area, it is not a sure thing, but might give you a good handle on what things are moving for. And, if your patient, you might also see how fast they are moving as well.
If all else fails, you could just make a cregslist add and see how many people contact you. Ignoring the lowballers that are always trying to trade used bubble gum for gold bars, you might get an offer your happy with.