Well folks I'm on the hunt for a newer (than a #14) head for my '87 300D. Currently searching yards for a 350 to pull the head, IP and turbo from. Question is, if I can get a complete later (#20 or above) head, what needs to be done to install it? I read about prechamber mods and or replacement but have not seen anything regarding a complete head replacement. I want to grab the turbo and IP as well to upgrade the hp some. The reason for this is I'm getting small amounts of oil in the cooling system indicating a failing head gasket. I don't have coolant in the oil or "morning after" pressure yet but want to address this before too long. I have another complete engine and trans but that engine also has a #14 head on it. Any info would be appreciated.