I have decided to keep my 300e stock and replace the transmission. I'll probably just buy a reman from Mercedes since I can't find another reputable builder. Since she has 239,000 miles I guess I shouldn't ***** about a $2000 trans. I have the engine out and intend to rework the head since it was using a quart every 400 miles. The oily condition of the intake and exhaust chambers verify bad seal/guides. I was concerned about the bottom end also but the pistons are tight and there is no ridge in the cylinders. The honing scratches are still visible. I was inspecting the timing chain and cam sprocket and noticed there are no MB part numbers to be found! Surely OEM MB parts would be identified, right? I'm beginning to think she's been into before!