How much should I sell my car for?

97 Cavalier coup. Has its problems. Gas tank leaks bad, fuel lines are shot and the pump is going. At the moment It leaks so bad I stopped driving it. No clue how many miles are on it because the old motor broke down, and there's a different one in it. Some stuff is new. All 4 tires were replaced before winter, as well as the brakes, rotors, and power steering pump. Not even gonna list all the other things I've had replaced for the last 3 years. I put it on craiglist, and wasn't expecting the mass emails I got of people wanting it, but i have no clue what price to throw at them. Bought it for $2,500, and have about $2,000 of stuff replaced. So some price advice please?