Repair pal estimates the repair to cost between $1768 - $2241. Keep in mind if you overheated the engine the heads should be checked for warpage at a machine shop. This will cost you more. I had two heads gone through and checked for $250 at a machine shop. You have choices when it comes to keeping or getting ride of your vehicle. If the car does not run and they can't drive it and so forth theres no tell what eles is wrong with the vehicle. So for someone to pay what you know its worth and what they think it worth is a fight. No matter what you tell someone they still know there can be more wrong. If you have the cash and think it's worth keeping a few more years keep it. If you don't want to keep dumping money into it try and sell it. If you were to junk it junkyards won't give you near what its worth to you.