My son's 2010 328i engine blew last night, we had pampered this car, regular maintenance, etc. The engine was purring just days ago. I have no idea what happened, metal debris (chunks) on the skid pan and oil everywhere. The shop just informed me that they can see a hole in the side of the block and are looking further. Needless to say, we need a good used engine, however, looking online and reading reviews a LOT are just scammers. Can anyone on this site recommend an honest contact for a used engine? Any help is greatly appreciated!