I'll chime in with my .02 for what it's worth. Your car looks nice, but is definitely modded to your taste. While there are others who will agree with your taste, by personalizing the appearance of your car, you essentially reduce the potential market of buyers. If you are having difficulty finding buyers, I would suggest returning your vehicle back to it's factory condition as much as possible. While it might seem that you are taking away from the value of the car, you must realize the most important factor here is the buyer's perception of value. A much larger market will value your car the closer it is to a factory condition. You could offer the aftermarket items along with the car to help the buyer think they are getting more for their money. This is just my experience, and of course there are always exceptions. I would wait for a buyer, and if none come forward, consider this option as a plan "B". Final tip, clean old cars out sale ragged new cars every day of the week. Good luck with the sale, and enjoy the 2011!
(Business degree with an internship at a Ford dealership if that helps the validity of my arguement.)