Is my thinking unrealistic?

Ok I have a 74 Dart Sport that I have been trying to sell for well over a year now. I paid $2500 for it 10 years ago and have put $3500 in parts I have put into as it sits now. That is just counting the big ticket stuff I though worthy of saving receipts for. I know this economy sucks but is $4000 unrealistic price for what I got in these days? Its a California car and I am here in Wisconsin so by midwest standards its about as perfect as you get for a 74 that has never been molested, body wise. Beginning to wonder with what I have into it, what is better to just to wait out this econo or to eat more of the cost of what I have into it. I mean I am definately not trying to make money off of the deal but I don't feel like I should give the dam thing away either. Anyone else dealing with this kind of situation in these times?