Found what appears to be a rebuilt Cyl head on an early 80's 528i that must have been recently rebuilt because it was super clean. Far too clean to match the rest of the engine. I nearly took it off but with the wife with me I opted not to today. This was at the Ecology yard on Imperial and Carmenita off the 5 freeway in Santa Fe Springs, CA. I'm a regular poster on the 2002 and E21 forums but thought you guys might be interested. I used to have a 76 530 and 71 2800CS too. Peter S