Yes I agree, sometimes when I am ordering a part they might ask, is it a Z3, yes I say and they say 4cyl or 6, I say 6, they say 2.8, I say no 3.2, they say I do not see a Z3 listed with a 3.2, but they do list an M roadster. I say ok, it is an M roadster, but it is also a Z3, Huh? Now add MZ4 or the Z4 roadster, etc...oh boy!