I see no way that car would sell for $1500, let alone $1000. If you have the means, part it out and move along. You will waste plenty of time trying to dump it on CL and last time I checked, time is not free. Pull the engine/trans then scrap the body off for $200.
If it does have an updated head which can be proven, that alone is about the only thing of any significant value. If you did not have it rebuilt prior to install, value will decrease vastly.
Hey, at least you recognize that you have a worn out vehicle and are not trying to blow smoke that it is worth $3000.