It will be an engine out maintenance and some enhancements. Based on what was learned on this E55, the engine will come apart to get a new oil pump check valve, but as the Crossfire's engine came from a CL55, it uses the single sump oil pan, so it does not have the same o-ring issue that the E55 has. However, there are two o-rings behind the timing cover that ALL M112(K)/M113(K) engines have, and when (not if) they fail, coolant runs into the oil. I will be replacing those, the oil pump chain & tensioner, and will think about replacing the timing chain, as well. Next will be a rear main seal, as mine has begun to weep. I will be adding a pair of Needwings headers, fresh spark plugs, and perhaps a few other small items. After that will be a Killer Chiller, and relocating the battery to the trunk. This will be to make room for a roughly 2.5 gallon tank where the battery currently lives. For the most part, all things that have been done before. Where it will change from done before is at the rear of the car, where I will be dropping and modifying the rear subframe to accept a HAG215 differential, Lobro (bolt in) axles, and a Wavetrac. While apart I have one more additional wee project that I will talk more about - if it works out. I'll talk about all of this and more in the other thread when I get to it. All of this will kick off around the third week of June.