It's worth whatever anyone is willing to pay for it, plain and simple. Try putting it on Ebay, with a high reserve, and see what people will pay, it may cost ya $25 to see, but at least you'll know what it will go for, thats the best advice I can give ya. As far a trade-in, I've worked at many car dealerships, and we wouldn't want it, cause all of the mods pose to much of a risk on us and the secondary driver.