My overheating 97 deville has exhaust in the coolant, and I'm pretty sure I'm looking at a replacement engine (I don't think I can fix this by myself). The car has 66k miles on it, and is in otherwise excellent condition, cream with leather seats. Does anyone have any idea what the car is worth if I try to sell it? Would it be more cost-effective to fix it, then sell it (or keep it)? Does anyone out there want to buy it?