Important - please read. Just added additional photos of the engine. Per the person I purchased the car from according to their listing, the car was only ever serviced by BMW. However, there is a part - I have no idea what it is called (sorry) that does not appear to be stock when photographing the engine. I Googled 1975 BMW engines to try to figure out what is was it appears to be originally a round pie shape situation as opposed to the smaller oblong unit marked A&I. Please see the 1st photo of the engine. I don't know that this matters and I have taken it to two different BMW dealers - neither who made any comment on it and said the car was super solid. But I wanted to disclose that because it's possible that it could indicate the car having been serviced elsewhere. Anyway, I apologize for making assumptions based on a previous listing if that is the case. Meanwhile, it runs really well.