They're wide body, used on all 2.0, 2.2 and 2.8 plus 1999 on 1.8/1.9.
I's coming back as a black 1998 built car registered May 1999 - is it an import or LHD? It's also coming back as 2300 cc which BMW never made. Well, there was a 'Z3 2.3' in the USA which was 2.5 litre. The last 7 digits of the VIN might help but really, they're going to be wide body type arms. They're getting hard to find now. I've not had or seen a decent pair of arms for a while.