Originally Posted by merc64
Utilize NADA and KBB, they are both online. They will give you an estimate of what you can get for your car. I always look at ebay and craigslist too to get a good idea on what my starting price should be. Your mods won't really hold any value unless you happen to find a buyer really interested in the way your car looks. Also, always a good idea to post up a picture if you're asking for opinions on "whats it worth". Good luck.
This and, it also depends how much in demand your car is for your area. Here in AZ, Mustangs sell pretty easily but in areas where there are four seasons or it rains/snows most of the time, lower demand for RWD sporty cars....