Anything that moves the position of the arm changes the geometry
Not disputing that, my point was / is the M shares no front suspension parts / running gear with other Z3s, the offset bushes are designed to work / complement the different ARB, drop links, wishbones, top mounts etc with that set up and are sold as suitable for M only. I was suggesting you may wish to check they will work with a non M setup in case they caused handling, tyre wear issues, or don't check its your car I was merely trying to be helpful.