I have had the Pfadt coilovers for a few months now on my 2001 Z06, absolutely love'm. Great ride and I dropped things about 2.25 inches. My 2nd gen Pfadt street swaybars are on the UPS truck heading in my direction presently.
The install took me two Saturday afternoons, was taking my time. I was also ugrading to Baer Eradispeed 2-piece rotors, so the front coilover install went a little different than the instructions say. I did not remove the lower control arm to clear the front spring removal. I disconnected both upper control arms and swung them down with the steering knuckles and lower control arm. This took the pressure off the spring and allowed me to remove the spring, with the rotors removed I think this gave me the clearance to do this. I did re-re-install the original spring clamps to the underside of the chassis to keep and possible incidents of things catcing in the empty spaces where the original spring used to be, particulary since I can't even clear a cigarette pack lying on the ground anymore.
Was a fun project, I look forward to my swaybars arriving in town.
-Bill