How do you put a price on your project car?

A car is I worth what somebody will pay for it. That is why it is important to do some research before advertising and pricing. I do not know if you are thinking about selling one, or if that was just a curiosity question. If I wanted to sell my 69 340 4 speed Barracuda with PS, AC and disk brakes, I would start with a good internet search. Remember that what you will mostly see is asking prices, but that would be a good first step. Then I would post pictures here on FABO and ask people if they have any real world knowledge of what a similar car has actually sold for. You will want to take a close and honest look at your car, because a lot of lookers will try to nit pick every minor flaw. Then I would take what I considered to be the researched selling price, add about 10-15% for negotiation wiggle room and advertise it. If you did all the work yourself, and you do good work, you might be able to break even IF you didn't pay too much for it, but losing 10% or so is more likely. If you had to pay to have a lot done, then plan on losing up to 50%. If you pay 15K for major body work and paint alone, that will be hard to recover. Plus, you have to consider what you are selling. Some cars are more valuable than others. It much easier to get upside down in a less desirable car than a more desirable one.