cheers for that, the bilsteins will be wet-built (no insert but built into the strut so to achieve the largest valve size) so as long as they are 50mm then the length wont reallly matter to much. I will be running either neutral or only just positive offset wheels so hopefully clearence shouldn't be to much of an issue but its good to know R30/31 have the most. What about the bolt pattern on the lower arm, which works with which? I will rose-joint the lower arm for camber adj but I still want the steering and castor arms to bolt up.