Mjbeck

Hello have abit of a problem my brother has 2010 w204 c200 cdi 2.2 with engine code om651. Engine broke and we had it rebuilt and unfortunately they did a really bad job and it was leaking oil and ran dry and broke down. They will not take the blame for it and have since given us the car back without an engine , gearbox or ecu. So we are now left with just a rolling chassis. However we now want to either put a different engine into it. A 3.0 v6 cdi if possible anybody help us with what we would need to do and is there any direct bolt in engines other than the om651? Which other engines fit into the w204 2010 c class? Any help would be appreciated as we are stuck with a rolling chassis. We have also read that everything is vin specific and coded to eachother , is there anyway to recode everything if we got new parts ?