I have done the fcabs before on this car. I replaced them with oem style. I went to a local shop and asked them to press them out and press the new ones in for me. Didn't cost too much.
I received the struts today and the eibach springs. I also got some reinforcement plates for the rear shock mounts from turner motorsport. Those things have got to be close to 1/4" thick! Not sure how thick they compare to the Z3 style. Still waiting on the hardware, strut and shock mounts, and powerflex rtabs. Then the fun begins.