I have repaired them and one never came back with no problems at all.Put cranshaft kits in them since they have a very weak bottom end and eat up crankshafts taking out rods too.They say replace the oil pumps,I don't and never seen a 2.7 come back with oil pump problems.Open the oil pump tube up and clean the screen up.Jasper does rebuild them with upgraded parts and I have installed one so far.