ok this is just a feeler.. but i have been trying to research how much is a motor worth that has ZERO compression in cylinder #4? it been guessed at what is wrong with it but not completely sure. no tear down yet. but it could be a hole in sleeve or block or piston... is what we think. so i was wondering what could i sell it for. for being a long block? i have had offers of 250-300.. is that a good offer since we truly don't now what wrong with it?