I am in the early stages of fitting my rear ZG flares on my 280z. I have read through a lot of install threads, most of which have broken picture links. My understanding is the best way to decide how high up to mount the flares is to remove the spring from my BC racing coilover to allow the shock to compress all the way to the bump stop.     However, when I did that, I can only compress the shock up so far until the rear wheel/tire (275-50-r15) runs into the factory wheel arch. There i